diff --git a/cave_data/1623-000.html b/cave_data/1623-000.html
index ba6a5f3d9..2cac4474c 100644
--- a/cave_data/1623-000.html
+++ b/cave_data/1623-000.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-000</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-000</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwarzmoosk&ouml;gelsystem</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-1.html b/cave_data/1623-1.html
index a24e2abb7..3e1344cbd 100644
--- a/cave_data/1623-1.html
+++ b/cave_data/1623-1.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-1</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-1</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Li&auml;gerh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/(W) +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-10.html b/cave_data/1623-10.html
index c920c0093..285925388 100644
--- a/cave_data/1623-10.html
+++ b/cave_data/1623-10.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-10</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-10</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Spalth&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-100.html b/cave_data/1623-100.html
index 3ef5e4b0f..e4e1909ac 100644
--- a/cave_data/1623-100.html
+++ b/cave_data/1623-100.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-100</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-100</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 100</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-103.html b/cave_data/1623-103.html
index 020436800..c062027fd 100644
--- a/cave_data/1623-103.html
+++ b/cave_data/1623-103.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-103</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-103</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 103</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-105.html b/cave_data/1623-105.html
index 15625270d..7c122c870 100644
--- a/cave_data/1623-105.html
+++ b/cave_data/1623-105.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-105</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-105</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 105</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-106.html b/cave_data/1623-106.html
index 447cc0c43..cbea66f8f 100644
--- a/cave_data/1623-106.html
+++ b/cave_data/1623-106.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-106</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-106</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Eislufth&ouml;hle(106)</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-107.html b/cave_data/1623-107.html
index d1283720d..08466dd60 100644
--- a/cave_data/1623-107.html
+++ b/cave_data/1623-107.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-107</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-107</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gemsh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>4/S/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-108.html b/cave_data/1623-108.html
index 8682eca9c..79dbfe476 100644
--- a/cave_data/1623-108.html
+++ b/cave_data/1623-108.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-108</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-108</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 108</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-109.html b/cave_data/1623-109.html
index 6b51a5f9e..80064d9ba 100644
--- a/cave_data/1623-109.html
+++ b/cave_data/1623-109.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-109</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-109</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa-Schacht 109</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-11.html b/cave_data/1623-11.html
index 6774a7d28..c4e2dd6ea 100644
--- a/cave_data/1623-11.html
+++ b/cave_data/1623-11.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-11</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-11</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>H&ouml;hle in der Loserwestwand 1</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-110.html b/cave_data/1623-110.html
index 3fd630b6c..7f2054f54 100644
--- a/cave_data/1623-110.html
+++ b/cave_data/1623-110.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-110</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-110</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Kein Hubschrauber H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-111.html b/cave_data/1623-111.html
index 7e0d5bdaf..28026b1d8 100644
--- a/cave_data/1623-111.html
+++ b/cave_data/1623-111.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-111</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-111</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 111</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-112.html b/cave_data/1623-112.html
index 5b28a5fa0..d0f05e441 100644
--- a/cave_data/1623-112.html
+++ b/cave_data/1623-112.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-112</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-112</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 112</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-113.html b/cave_data/1623-113.html
index f779b3b98..d604f1d54 100644
--- a/cave_data/1623-113.html
+++ b/cave_data/1623-113.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-113</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-113</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Sonnenstrahlh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>4/S/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-115.html b/cave_data/1623-115.html
index 62cd198be..1766b965f 100644
--- a/cave_data/1623-115.html
+++ b/cave_data/1623-115.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-115</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-115</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schnellzugh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>6/t/S/W x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-116.html b/cave_data/1623-116.html
index 4d6a30e4c..d68288696 100644
--- a/cave_data/1623-116.html
+++ b/cave_data/1623-116.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-116</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-116</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Kleine Eish&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/t/S/E +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-117.html b/cave_data/1623-117.html
index 971bbac68..c13f03bc7 100644
--- a/cave_data/1623-117.html
+++ b/cave_data/1623-117.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-117</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-117</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Stuttgarter-Schacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T/S/ +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-118.html b/cave_data/1623-118.html
index 6c86c9d48..55d6eda20 100644
--- a/cave_data/1623-118.html
+++ b/cave_data/1623-118.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-118</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-118</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa-Schacht 118</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-119.html b/cave_data/1623-119.html
index dc3a9fdec..1580194cb 100644
--- a/cave_data/1623-119.html
+++ b/cave_data/1623-119.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-119</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-119</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa-Schacht 119</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-12.html b/cave_data/1623-12.html
index 333702fb0..4eebe1cd7 100644
--- a/cave_data/1623-12.html
+++ b/cave_data/1623-12.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-12</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-12</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>H&ouml;hle in der Loserwestwand 2</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/T -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-120.html b/cave_data/1623-120.html
index ee529ee41..3462fc3a7 100644
--- a/cave_data/1623-120.html
+++ b/cave_data/1623-120.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-120</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-120</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa-Schacht 120</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-125.html b/cave_data/1623-125.html
index 5850268e8..4e7bf5216 100644
--- a/cave_data/1623-125.html
+++ b/cave_data/1623-125.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-125</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-125</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Feierabendschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-126.html b/cave_data/1623-126.html
index ffc258d8c..5b519ab80 100644
--- a/cave_data/1623-126.html
+++ b/cave_data/1623-126.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-126</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-126</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Tunnel Schacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-127.html b/cave_data/1623-127.html
index a60d57f13..d918ed750 100644
--- a/cave_data/1623-127.html
+++ b/cave_data/1623-127.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-127</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-127</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Kleine Firnh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-128.html b/cave_data/1623-128.html
index c4f95574a..aa226e818 100644
--- a/cave_data/1623-128.html
+++ b/cave_data/1623-128.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-128</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-128</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Enttauschungsschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-129.html b/cave_data/1623-129.html
index a2d5a6209..c38fa48bd 100644
--- a/cave_data/1623-129.html
+++ b/cave_data/1623-129.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-129</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-129</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gro&szlig;e Firnh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-13.html b/cave_data/1623-13.html
index 8037d64fb..84b477b0b 100644
--- a/cave_data/1623-13.html
+++ b/cave_data/1623-13.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-13</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-13</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Knochenh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-130.html b/cave_data/1623-130.html
index 360b0f987..7db888381 100644
--- a/cave_data/1623-130.html
+++ b/cave_data/1623-130.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-130</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-130</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>C&auml;cilien-Schacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-131.html b/cave_data/1623-131.html
index 80c53fb6d..af537e4d0 100644
--- a/cave_data/1623-131.html
+++ b/cave_data/1623-131.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-131</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-131</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Thomas-Eish&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/E/S x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-132.html b/cave_data/1623-132.html
index dd28a00fd..c304818c7 100644
--- a/cave_data/1623-132.html
+++ b/cave_data/1623-132.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-132</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-132</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Tropfsteinh&ouml;hle am Augsteck</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-133.html b/cave_data/1623-133.html
index 69b5da05b..545cd2dfc 100644
--- a/cave_data/1623-133.html
+++ b/cave_data/1623-133.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-133</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-133</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Unterstandh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-134.html b/cave_data/1623-134.html
index 028b6e90e..da14f68ad 100644
--- a/cave_data/1623-134.html
+++ b/cave_data/1623-134.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-134</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-134</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>H&ouml;hlenruine bei der Wasserstelle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-135.html b/cave_data/1623-135.html
index 45468ae4b..dc83cf986 100644
--- a/cave_data/1623-135.html
+++ b/cave_data/1623-135.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-135</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-135</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 135</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-136.html b/cave_data/1623-136.html
index a952e22e5..c8190fe31 100644
--- a/cave_data/1623-136.html
+++ b/cave_data/1623-136.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-136</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-136</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Steinschlagschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-137.html b/cave_data/1623-137.html
index 218fad224..ac66464ea 100644
--- a/cave_data/1623-137.html
+++ b/cave_data/1623-137.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-137</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-137</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 137</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-138.html b/cave_data/1623-138.html
index 545135fa2..f56952f85 100644
--- a/cave_data/1623-138.html
+++ b/cave_data/1623-138.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-138</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-138</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 138</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-139.html b/cave_data/1623-139.html
index e5a17da4a..38925f829 100644
--- a/cave_data/1623-139.html
+++ b/cave_data/1623-139.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-139</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-139</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 139</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-14.html b/cave_data/1623-14.html
index 11c030730..56f7172f5 100644
--- a/cave_data/1623-14.html
+++ b/cave_data/1623-14.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-14</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-14</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schafkirche</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-140.html b/cave_data/1623-140.html
index 21d15e695..c60fbeb33 100644
--- a/cave_data/1623-140.html
+++ b/cave_data/1623-140.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-140</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-140</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 140</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S x </kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-141.html b/cave_data/1623-141.html
index ee9431e7b..7c38a133f 100644
--- a/cave_data/1623-141.html
+++ b/cave_data/1623-141.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-141</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-141</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa H&ouml;hle 141</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-142.html b/cave_data/1623-142.html
index f1f50cdea..2eefeeb67 100644
--- a/cave_data/1623-142.html
+++ b/cave_data/1623-142.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-142</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-142</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa H&ouml;hle 142</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>6/T/S x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-143.html b/cave_data/1623-143.html
index 2c2660f86..00edd134e 100644
--- a/cave_data/1623-143.html
+++ b/cave_data/1623-143.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-143</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-143</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Wei&szlig;e Warze Schacht I</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>3/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-144.html b/cave_data/1623-144.html
index 6e46fca06..981820ee2 100644
--- a/cave_data/1623-144.html
+++ b/cave_data/1623-144.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-144</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-144</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Tony's Second H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>6/S/T x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-146.html b/cave_data/1623-146.html
index 10576e7a7..0e6d22c13 100644
--- a/cave_data/1623-146.html
+++ b/cave_data/1623-146.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-146</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-146</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Tobogganschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-147.html b/cave_data/1623-147.html
index 33bface56..326adc1ca 100644
--- a/cave_data/1623-147.html
+++ b/cave_data/1623-147.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-147</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-147</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa H&ouml;hle 147</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-149.html b/cave_data/1623-149.html
index 211d15fd2..7c8d41a18 100644
--- a/cave_data/1623-149.html
+++ b/cave_data/1623-149.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-149</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-149</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 149</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-15.html b/cave_data/1623-15.html
index 516153b28..5e2cf011e 100644
--- a/cave_data/1623-15.html
+++ b/cave_data/1623-15.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-15</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-15</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Michel-Gang</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/(W) +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-150.html b/cave_data/1623-150.html
index c94c7600b..65ffee94b 100644
--- a/cave_data/1623-150.html
+++ b/cave_data/1623-150.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-150</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-150</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa R&ouml;hrh&ouml;hle 150</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-151.html b/cave_data/1623-151.html
index 854641b0d..2a0a31d56 100644
--- a/cave_data/1623-151.html
+++ b/cave_data/1623-151.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-151</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-151</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa H&ouml;hle 151</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-152.html b/cave_data/1623-152.html
index 3d69bd551..e3ef3cb44 100644
--- a/cave_data/1623-152.html
+++ b/cave_data/1623-152.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-152</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-152</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Bananeh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>4/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-153.html b/cave_data/1623-153.html
index 74f361bf2..1d3614a37 100644
--- a/cave_data/1623-153.html
+++ b/cave_data/1623-153.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-153</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-153</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 153</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-154.html b/cave_data/1623-154.html
index 383f08a73..9c85f6b20 100644
--- a/cave_data/1623-154.html
+++ b/cave_data/1623-154.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-154</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-154</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 154</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-155.html b/cave_data/1623-155.html
index a07ec89ad..e7e111542 100644
--- a/cave_data/1623-155.html
+++ b/cave_data/1623-155.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-155</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-155</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Unerforscht Schacht 155</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-157.html b/cave_data/1623-157.html
index 5e26f1f21..e5118e735 100644
--- a/cave_data/1623-157.html
+++ b/cave_data/1623-157.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-157</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-157</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Pirat Schacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><area>1c</area><!-- the CUCC-defined areas shown in http://expo.survex.com/areas.htm -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-158.html b/cave_data/1623-158.html
index 1337143f6..84144d429 100644
--- a/cave_data/1623-158.html
+++ b/cave_data/1623-158.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-158</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-158</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Donner und Blitzen H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>3/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-16.html b/cave_data/1623-16.html
index a16de70c0..9cb686856 100644
--- a/cave_data/1623-16.html
+++ b/cave_data/1623-16.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-16</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-16</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Pauli-Loch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-160.html b/cave_data/1623-160.html
index b1789fa72..abd4ebcf3 100644
--- a/cave_data/1623-160.html
+++ b/cave_data/1623-160.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-160</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-160</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 160</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S/ +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-161.html b/cave_data/1623-161.html
index 324c02a57..4b80abf19 100644
--- a/cave_data/1623-161.html
+++ b/cave_data/1623-161.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-161</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-161</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Kaninchenh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>5/S/E x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-162.html b/cave_data/1623-162.html
index 22257f2d7..7e5960f3f 100644
--- a/cave_data/1623-162.html
+++ b/cave_data/1623-162.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-162</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-162</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa H&ouml;hle 162</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-163.html b/cave_data/1623-163.html
index 99bc39d72..6a55af585 100644
--- a/cave_data/1623-163.html
+++ b/cave_data/1623-163.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-163</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-163</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa H&ouml;hle 163</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-164.html b/cave_data/1623-164.html
index 5f1b8d10a..724cd0996 100644
--- a/cave_data/1623-164.html
+++ b/cave_data/1623-164.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-164</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-164</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 164</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-165.html b/cave_data/1623-165.html
index 81a3e8783..42235067e 100644
--- a/cave_data/1623-165.html
+++ b/cave_data/1623-165.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-165</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-165</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 165</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-17.html b/cave_data/1623-17.html
index 7354b9891..591fa127b 100644
--- a/cave_data/1623-17.html
+++ b/cave_data/1623-17.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-17</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-17</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>B&auml;renh&ouml;hle im H&ouml;llgraben</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-170.html b/cave_data/1623-170.html
index 9856e448e..665aa23c2 100644
--- a/cave_data/1623-170.html
+++ b/cave_data/1623-170.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-170</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-170</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>LUSS/LA25</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-172.html b/cave_data/1623-172.html
index e5c7c7419..e891813ac 100644
--- a/cave_data/1623-172.html
+++ b/cave_data/1623-172.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-172</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-172</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau H&ouml;hle 90/2</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-173.html b/cave_data/1623-173.html
index 64ac75cce..09896b10c 100644
--- a/cave_data/1623-173.html
+++ b/cave_data/1623-173.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-173</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-173</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 90/3</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-174.html b/cave_data/1623-174.html
index 7fe7221b5..193c2cfd1 100644
--- a/cave_data/1623-174.html
+++ b/cave_data/1623-174.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-174</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-174</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 90/4</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-175.html b/cave_data/1623-175.html
index 097915277..689b7626e 100644
--- a/cave_data/1623-175.html
+++ b/cave_data/1623-175.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-175</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-175</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 90/5</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-176.html b/cave_data/1623-176.html
index 6c9c20745..d360928de 100644
--- a/cave_data/1623-176.html
+++ b/cave_data/1623-176.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-176</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-176</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 90/6</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-177.html b/cave_data/1623-177.html
index 88584582b..1f603b0ee 100644
--- a/cave_data/1623-177.html
+++ b/cave_data/1623-177.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-177</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-177</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Tantalus Schacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-178.html b/cave_data/1623-178.html
index 233879e3a..83b7b01d6 100644
--- a/cave_data/1623-178.html
+++ b/cave_data/1623-178.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-178</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-178</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau H&ouml;hle 90/8</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-179.html b/cave_data/1623-179.html
index d1a93baf1..fb09fd7a4 100644
--- a/cave_data/1623-179.html
+++ b/cave_data/1623-179.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-179</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-179</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 90/9</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-18.html b/cave_data/1623-18.html
index ed069fd69..ed3eff6da 100644
--- a/cave_data/1623-18.html
+++ b/cave_data/1623-18.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-18</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-18</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gaisofen im Ammerei</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-180.html b/cave_data/1623-180.html
index 5e0e0187d..4ca77ffd5 100644
--- a/cave_data/1623-180.html
+++ b/cave_data/1623-180.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-180</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-180</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 90/10</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-181.html b/cave_data/1623-181.html
index 46929c207..312793c99 100644
--- a/cave_data/1623-181.html
+++ b/cave_data/1623-181.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-181</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-181</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 90/11</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-183.html b/cave_data/1623-183.html
index 1c45ffc77..6f1f7b517 100644
--- a/cave_data/1623-183.html
+++ b/cave_data/1623-183.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-183</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-183</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Elchfalle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S x </kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-184.html b/cave_data/1623-184.html
index 4f56ad2c7..e7d7615cb 100644
--- a/cave_data/1623-184.html
+++ b/cave_data/1623-184.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-184</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-184</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Shiruken</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-187.html b/cave_data/1623-187.html
index df154ea03..3bb2cd0c0 100644
--- a/cave_data/1623-187.html
+++ b/cave_data/1623-187.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-187</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-187</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 187</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-189.html b/cave_data/1623-189.html
index facbd3610..888c66cf8 100644
--- a/cave_data/1623-189.html
+++ b/cave_data/1623-189.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-189</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-189</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 189</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-19.html b/cave_data/1623-19.html
index c1342f5d6..320e621cc 100644
--- a/cave_data/1623-19.html
+++ b/cave_data/1623-19.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-19</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-19</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gamsofen im Scharlingkar</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-191.html b/cave_data/1623-191.html
index 1e7005406..d7630ed3f 100644
--- a/cave_data/1623-191.html
+++ b/cave_data/1623-191.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-191</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-191</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 191</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-192.html b/cave_data/1623-192.html
index 1416b1d14..927d4ae71 100644
--- a/cave_data/1623-192.html
+++ b/cave_data/1623-192.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-192</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-192</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 192</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-193.html b/cave_data/1623-193.html
index 322f983a3..89ccd5de1 100644
--- a/cave_data/1623-193.html
+++ b/cave_data/1623-193.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-193</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-193</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 193</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-194.html b/cave_data/1623-194.html
index 603c6d308..542f32126 100644
--- a/cave_data/1623-194.html
+++ b/cave_data/1623-194.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-194</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-194</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 194</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-195.html b/cave_data/1623-195.html
index 1f752650d..a47d039a0 100644
--- a/cave_data/1623-195.html
+++ b/cave_data/1623-195.html
@@ -39,7 +39,7 @@ code used in the Austrian kataster e.g '1/S +' - https://expo/.survex.com/katast
 <unofficial_number></unofficial_number><!-- (This is any name. Either this or kataster_number is required). Initial temporary cave ID used until kataster number is allocated e.g. '2012-DD-01'-->
 
 <entrance>
-  <entranceslug>1623-195</entranceslug><!-- Internal ID to refer to each entrance instance in the entrance files (typically the same as that filename (e.g. 1623-161c). Matches the 'slug' field in the entrance file -->
+  <entranceslug></entranceslug><!-- Internal ID to refer to each entrance instance in the entrance files (typically the same as that filename (e.g. 1623-161c). Matches the 'slug' field in the entrance file -->
   <letter></letter><!--Leave blank for single-entrance cave. If there is more than one entrance then the letter needs to be given. Must match the entranceslug ID.  -->
 </entrance>
 
diff --git a/cave_data/1623-196.html b/cave_data/1623-196.html
index 7cd0cb6ed..cd91d4f01 100644
--- a/cave_data/1623-196.html
+++ b/cave_data/1623-196.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-196</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-196</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa H&ouml;hle 196</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-197.html b/cave_data/1623-197.html
index 69784db10..dd1549aee 100644
--- a/cave_data/1623-197.html
+++ b/cave_data/1623-197.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-197</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-197</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Bemoost Tropfen H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-1989-01.html b/cave_data/1623-1989-01.html
index 45de0d5b3..e4c5aa094 100644
--- a/cave_data/1623-1989-01.html
+++ b/cave_data/1623-1989-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-1989-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-1989-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Maybe195</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-199.html b/cave_data/1623-199.html
index 0d47ab4f6..bb7229774 100644
--- a/cave_data/1623-199.html
+++ b/cave_data/1623-199.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-199</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-199</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>St&uuml;rzender Felsbrocken H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-1990-15.html b/cave_data/1623-1990-15.html
index d8e98bd49..00810e397 100644
--- a/cave_data/1623-1990-15.html
+++ b/cave_data/1623-1990-15.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-1990-15</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-1990-15</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>MaybeNonExistant</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-1992-X01.html b/cave_data/1623-1992-X01.html
index 18d06b3c2..2d109829d 100644
--- a/cave_data/1623-1992-X01.html
+++ b/cave_data/1623-1992-X01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-1992-X01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-1992-X01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-1996-01.html b/cave_data/1623-1996-01.html
index 04870d365..6475e5eae 100644
--- a/cave_data/1623-1996-01.html
+++ b/cave_data/1623-1996-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-1996-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-1996-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Ski-pole h&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-1996-05.html b/cave_data/1623-1996-05.html
index b7b557e19..37aa4b1c8 100644
--- a/cave_data/1623-1996-05.html
+++ b/cave_data/1623-1996-05.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-1996-05</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-1996-05</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-1996WK12.html b/cave_data/1623-1996WK12.html
index d66bd50a8..4a3a5aeed 100644
--- a/cave_data/1623-1996WK12.html
+++ b/cave_data/1623-1996WK12.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-1996WK12</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-1996WK12</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-1996WK4.html b/cave_data/1623-1996WK4.html
index 587c3ceb2..80c03cd3a 100644
--- a/cave_data/1623-1996WK4.html
+++ b/cave_data/1623-1996WK4.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-1996WK4</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-1996WK4</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-1998-X01.html b/cave_data/1623-1998-X01.html
index 1af3e3b53..69bc88d17 100644
--- a/cave_data/1623-1998-X01.html
+++ b/cave_data/1623-1998-X01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-1998-X01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-1998-X01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>unknown98</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>? +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-1999-MS-01.html b/cave_data/1623-1999-MS-01.html
index 12b003d7d..54656a212 100644
--- a/cave_data/1623-1999-MS-01.html
+++ b/cave_data/1623-1999-MS-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-1999-MS-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-1999-MS-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-1999-MS-02.html b/cave_data/1623-1999-MS-02.html
index 99c41ba7b..b617070c3 100644
--- a/cave_data/1623-1999-MS-02.html
+++ b/cave_data/1623-1999-MS-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-1999-MS-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-1999-MS-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-1999-OB-01.html b/cave_data/1623-1999-OB-01.html
index f38ec2792..8a77f7f70 100644
--- a/cave_data/1623-1999-OB-01.html
+++ b/cave_data/1623-1999-OB-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-1999-OB-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-1999-OB-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-1999-OB-02.html b/cave_data/1623-1999-OB-02.html
index d062b41af..6b2e1e3b5 100644
--- a/cave_data/1623-1999-OB-02.html
+++ b/cave_data/1623-1999-OB-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-1999-OB-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-1999-OB-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-1999-X01.html b/cave_data/1623-1999-X01.html
index 75ffa374a..2e9dfb6da 100644
--- a/cave_data/1623-1999-X01.html
+++ b/cave_data/1623-1999-X01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-1999-X01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-1999-X01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2.html b/cave_data/1623-2.html
index d9c26c608..83a183d8e 100644
--- a/cave_data/1623-2.html
+++ b/cave_data/1623-2.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Wasserl&ouml;cher</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/(W) =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-20.html b/cave_data/1623-20.html
index a89d231fb..d85e71ec9 100644
--- a/cave_data/1623-20.html
+++ b/cave_data/1623-20.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-20</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-20</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Windh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-200.html b/cave_data/1623-200.html
index 173cdf6ce..0d3a634c3 100644
--- a/cave_data/1623-200.html
+++ b/cave_data/1623-200.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-200</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-200</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Verlorener Rucksack Schacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2000-02.html b/cave_data/1623-2000-02.html
index 15ec29cb0..b07fb99b9 100644
--- a/cave_data/1623-2000-02.html
+++ b/cave_data/1623-2000-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2000-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2000-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/? +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2000-08.html b/cave_data/1623-2000-08.html
index 82489a713..b243ff08a 100644
--- a/cave_data/1623-2000-08.html
+++ b/cave_data/1623-2000-08.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2000-08</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2000-08</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Grabenkriegh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2001-02.html b/cave_data/1623-2001-02.html
index 933c2f017..6a1a48249 100644
--- a/cave_data/1623-2001-02.html
+++ b/cave_data/1623-2001-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2001-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2001-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2001-03.html b/cave_data/1623-2001-03.html
index 6e551b263..8fb0c5fbe 100644
--- a/cave_data/1623-2001-03.html
+++ b/cave_data/1623-2001-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2001-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2001-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T=</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2001-09.html b/cave_data/1623-2001-09.html
index 3c3c8ceb0..7e7f65c23 100644
--- a/cave_data/1623-2001-09.html
+++ b/cave_data/1623-2001-09.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2001-09</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2001-09</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Funkberaterschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2001-10.html b/cave_data/1623-2001-10.html
index efb34124c..b1d32e2e7 100644
--- a/cave_data/1623-2001-10.html
+++ b/cave_data/1623-2001-10.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2001-10</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2001-10</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gro&szlig;arbeith&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2001-11.html b/cave_data/1623-2001-11.html
index 9e709aee1..0da235981 100644
--- a/cave_data/1623-2001-11.html
+++ b/cave_data/1623-2001-11.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2001-11</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2001-11</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schn&uuml;rsenkelschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2001-12.html b/cave_data/1623-2001-12.html
index 2e4d5f7a5..cdfaafed5 100644
--- a/cave_data/1623-2001-12.html
+++ b/cave_data/1623-2001-12.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2001-12</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2001-12</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Unnotiggewohnlichkeitschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>=</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-03.html b/cave_data/1623-2002-03.html
index c049254ae..51bdfe4ca 100644
--- a/cave_data/1623-2002-03.html
+++ b/cave_data/1623-2002-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Igelh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-06.html b/cave_data/1623-2002-06.html
index 4ee5c3e95..870866fcf 100644
--- a/cave_data/1623-2002-06.html
+++ b/cave_data/1623-2002-06.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-06</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-06</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Eiercremeh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-07.html b/cave_data/1623-2002-07.html
index c4982fc3d..5d489686e 100644
--- a/cave_data/1623-2002-07.html
+++ b/cave_data/1623-2002-07.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-07</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-07</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Quarries</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-10.html b/cave_data/1623-2002-10.html
index ebb5988f6..e708660e3 100644
--- a/cave_data/1623-2002-10.html
+++ b/cave_data/1623-2002-10.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-10</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-10</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-14.html b/cave_data/1623-2002-14.html
index 96cc4c921..6be930e2f 100644
--- a/cave_data/1623-2002-14.html
+++ b/cave_data/1623-2002-14.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-14</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-14</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Dead Tree Hole</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-AD-01.html b/cave_data/1623-2002-AD-01.html
index 1ebcdc798..1ca32e5eb 100644
--- a/cave_data/1623-2002-AD-01.html
+++ b/cave_data/1623-2002-AD-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-AD-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-AD-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-AD-02.html b/cave_data/1623-2002-AD-02.html
index 268b2504f..9fb77de78 100644
--- a/cave_data/1623-2002-AD-02.html
+++ b/cave_data/1623-2002-AD-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-AD-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-AD-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-AD-03.html b/cave_data/1623-2002-AD-03.html
index 449e864e8..2a3dff529 100644
--- a/cave_data/1623-2002-AD-03.html
+++ b/cave_data/1623-2002-AD-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-AD-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-AD-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-AD-04.html b/cave_data/1623-2002-AD-04.html
index 62b703cf2..204f36faa 100644
--- a/cave_data/1623-2002-AD-04.html
+++ b/cave_data/1623-2002-AD-04.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-AD-04</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-AD-04</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Klippenh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-BUC-01.html b/cave_data/1623-2002-BUC-01.html
index 87d8f434f..a5d7bc6f1 100644
--- a/cave_data/1623-2002-BUC-01.html
+++ b/cave_data/1623-2002-BUC-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-BUC-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-BUC-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-W-02.html b/cave_data/1623-2002-W-02.html
index c4cda71df..b766d177b 100644
--- a/cave_data/1623-2002-W-02.html
+++ b/cave_data/1623-2002-W-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-W-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-W-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-X09.html b/cave_data/1623-2002-X09.html
index 1e485b606..6cd35431d 100644
--- a/cave_data/1623-2002-X09.html
+++ b/cave_data/1623-2002-X09.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-X09</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-X09</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-X15.html b/cave_data/1623-2002-X15.html
index 7a355ac4f..649755864 100644
--- a/cave_data/1623-2002-X15.html
+++ b/cave_data/1623-2002-X15.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-X15</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-X15</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-X16.html b/cave_data/1623-2002-X16.html
index 17544f8ed..d5c3d3ecc 100644
--- a/cave_data/1623-2002-X16.html
+++ b/cave_data/1623-2002-X16.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-X16</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-X16</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-X17.html b/cave_data/1623-2002-X17.html
index 5d8679be4..7d8d0173b 100644
--- a/cave_data/1623-2002-X17.html
+++ b/cave_data/1623-2002-X17.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-X17</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-X17</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2002-X18.html b/cave_data/1623-2002-X18.html
index eeda4acfe..c09e1af3e 100644
--- a/cave_data/1623-2002-X18.html
+++ b/cave_data/1623-2002-X18.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2002-X18</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2002-X18</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2003-X11.html b/cave_data/1623-2003-X11.html
index 11aec22e1..c201b5108 100644
--- a/cave_data/1623-2003-X11.html
+++ b/cave_data/1623-2003-X11.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2003-X11</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2003-X11</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2003-X12.html b/cave_data/1623-2003-X12.html
index aec6ed961..68daadf2a 100644
--- a/cave_data/1623-2003-X12.html
+++ b/cave_data/1623-2003-X12.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2003-X12</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2003-X12</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2003-X13.html b/cave_data/1623-2003-X13.html
index cb8588afe..2802df52d 100644
--- a/cave_data/1623-2003-X13.html
+++ b/cave_data/1623-2003-X13.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2003-X13</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2003-X13</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2003-X16.html b/cave_data/1623-2003-X16.html
index 43005bc4c..c798cc1fc 100644
--- a/cave_data/1623-2003-X16.html
+++ b/cave_data/1623-2003-X16.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2003-X16</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2003-X16</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2003-X17.html b/cave_data/1623-2003-X17.html
index 08426605f..4bdd3fe7a 100644
--- a/cave_data/1623-2003-X17.html
+++ b/cave_data/1623-2003-X17.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2003-X17</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2003-X17</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2003-X18.html b/cave_data/1623-2003-X18.html
index efe30fc42..23e1fcec2 100644
--- a/cave_data/1623-2003-X18.html
+++ b/cave_data/1623-2003-X18.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2003-X18</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2003-X18</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2004-02.html b/cave_data/1623-2004-02.html
index 39e75a32b..574818c89 100644
--- a/cave_data/1623-2004-02.html
+++ b/cave_data/1623-2004-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2004-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2004-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>=</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2004-04.html b/cave_data/1623-2004-04.html
index c4b3ed484..cef73da9e 100644
--- a/cave_data/1623-2004-04.html
+++ b/cave_data/1623-2004-04.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2004-04</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2004-04</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/-</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2004-05.html b/cave_data/1623-2004-05.html
index 28980069a..b31ebba11 100644
--- a/cave_data/1623-2004-05.html
+++ b/cave_data/1623-2004-05.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2004-05</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2004-05</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2004-06.html b/cave_data/1623-2004-06.html
index 96c42ad53..6a88bdc64 100644
--- a/cave_data/1623-2004-06.html
+++ b/cave_data/1623-2004-06.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2004-06</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2004-06</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2004-07.html b/cave_data/1623-2004-07.html
index 778d51c3e..5b5fe51e2 100644
--- a/cave_data/1623-2004-07.html
+++ b/cave_data/1623-2004-07.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2004-07</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2004-07</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2004-08.html b/cave_data/1623-2004-08.html
index de03f2b09..77c9e2e39 100644
--- a/cave_data/1623-2004-08.html
+++ b/cave_data/1623-2004-08.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2004-08</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2004-08</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2004-09.html b/cave_data/1623-2004-09.html
index 6721dc86e..3be4fce78 100644
--- a/cave_data/1623-2004-09.html
+++ b/cave_data/1623-2004-09.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2004-09</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2004-09</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2004-10.html b/cave_data/1623-2004-10.html
index 35964677f..ce215e016 100644
--- a/cave_data/1623-2004-10.html
+++ b/cave_data/1623-2004-10.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2004-10</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2004-10</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-0</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2004-13.html b/cave_data/1623-2004-13.html
index 470f1b8ec..4d6f2907b 100644
--- a/cave_data/1623-2004-13.html
+++ b/cave_data/1623-2004-13.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2004-13</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2004-13</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2004-14.html b/cave_data/1623-2004-14.html
index 611683fd2..baf7ef43d 100644
--- a/cave_data/1623-2004-14.html
+++ b/cave_data/1623-2004-14.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2004-14</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2004-14</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Doktorarbeitloch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2004-16.html b/cave_data/1623-2004-16.html
index 1d2ee72ae..7e4774ba4 100644
--- a/cave_data/1623-2004-16.html
+++ b/cave_data/1623-2004-16.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2004-16</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2004-16</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2004-17.html b/cave_data/1623-2004-17.html
index f5f2fbc92..c648d87a0 100644
--- a/cave_data/1623-2004-17.html
+++ b/cave_data/1623-2004-17.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2004-17</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2004-17</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2004-18.html b/cave_data/1623-2004-18.html
index 3c50b2258..a766bb7d8 100644
--- a/cave_data/1623-2004-18.html
+++ b/cave_data/1623-2004-18.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2004-18</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2004-18</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Eiskeller</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2004-21.html b/cave_data/1623-2004-21.html
index 3a72c136e..baa791ea0 100644
--- a/cave_data/1623-2004-21.html
+++ b/cave_data/1623-2004-21.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2004-21</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2004-21</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/E =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2005-01.html b/cave_data/1623-2005-01.html
index 2ac2a33a7..58e56c997 100644
--- a/cave_data/1623-2005-01.html
+++ b/cave_data/1623-2005-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2005-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2005-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S + (?)</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2005-02.html b/cave_data/1623-2005-02.html
index c297710a9..4bb5f19ed 100644
--- a/cave_data/1623-2005-02.html
+++ b/cave_data/1623-2005-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2005-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2005-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>?</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2005-03.html b/cave_data/1623-2005-03.html
index 79e492094..1a698ca53 100644
--- a/cave_data/1623-2005-03.html
+++ b/cave_data/1623-2005-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2005-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2005-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>?</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2005-95.html b/cave_data/1623-2005-95.html
index 157d3f920..7da32b7d9 100644
--- a/cave_data/1623-2005-95.html
+++ b/cave_data/1623-2005-95.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2005-95</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2005-95</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2005-97.html b/cave_data/1623-2005-97.html
index 3988529e7..cfd4904f4 100644
--- a/cave_data/1623-2005-97.html
+++ b/cave_data/1623-2005-97.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2005-97</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2005-97</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Genutetschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2005-98.html b/cave_data/1623-2005-98.html
index c3b644654..a1571da6d 100644
--- a/cave_data/1623-2005-98.html
+++ b/cave_data/1623-2005-98.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2005-98</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2005-98</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>(Hanger Pot)</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2005-99.html b/cave_data/1623-2005-99.html
index 56b048064..8b8633975 100644
--- a/cave_data/1623-2005-99.html
+++ b/cave_data/1623-2005-99.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2005-99</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2005-99</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Ohne Mantel H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2006-04.html b/cave_data/1623-2006-04.html
index 2f50c4fc4..4480854a7 100644
--- a/cave_data/1623-2006-04.html
+++ b/cave_data/1623-2006-04.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2006-04</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2006-04</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2006-05.html b/cave_data/1623-2006-05.html
index 849e15c13..b23ee0b3e 100644
--- a/cave_data/1623-2006-05.html
+++ b/cave_data/1623-2006-05.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2006-05</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2006-05</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2006-07.html b/cave_data/1623-2006-07.html
index eca0a1491..17d5ff867 100644
--- a/cave_data/1623-2006-07.html
+++ b/cave_data/1623-2006-07.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2006-07</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2006-07</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Infrared Spectrometer</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2006-71.html b/cave_data/1623-2006-71.html
index dbc914176..7d549de45 100644
--- a/cave_data/1623-2006-71.html
+++ b/cave_data/1623-2006-71.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2006-71</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2006-71</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2006-72.html b/cave_data/1623-2006-72.html
index cfc400771..24dab10c1 100644
--- a/cave_data/1623-2006-72.html
+++ b/cave_data/1623-2006-72.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2006-72</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2006-72</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Mystery Plus Cave</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2006-73.html b/cave_data/1623-2006-73.html
index add6cdd80..9d3d3a97c 100644
--- a/cave_data/1623-2006-73.html
+++ b/cave_data/1623-2006-73.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2006-73</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2006-73</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Ice Curtain Cave</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2007-01.html b/cave_data/1623-2007-01.html
index dc324fcf8..d9791d7fb 100644
--- a/cave_data/1623-2007-01.html
+++ b/cave_data/1623-2007-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2007-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2007-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T+</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2007-02.html b/cave_data/1623-2007-02.html
index 838b5e59a..c1a7555c1 100644
--- a/cave_data/1623-2007-02.html
+++ b/cave_data/1623-2007-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2007-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2007-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2007-04.html b/cave_data/1623-2007-04.html
index 022f6494a..9f4b8104a 100644
--- a/cave_data/1623-2007-04.html
+++ b/cave_data/1623-2007-04.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2007-04</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2007-04</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Slippery Hole</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2007-05.html b/cave_data/1623-2007-05.html
index 0710fce9e..f639206c6 100644
--- a/cave_data/1623-2007-05.html
+++ b/cave_data/1623-2007-05.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2007-05</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2007-05</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2007-06.html b/cave_data/1623-2007-06.html
index 8b06982be..ea9250ab6 100644
--- a/cave_data/1623-2007-06.html
+++ b/cave_data/1623-2007-06.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2007-06</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2007-06</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2007-07.html b/cave_data/1623-2007-07.html
index ce8c49041..73857553e 100644
--- a/cave_data/1623-2007-07.html
+++ b/cave_data/1623-2007-07.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2007-07</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2007-07</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2007-11.html b/cave_data/1623-2007-11.html
index fd19c62e1..f7c8b2296 100644
--- a/cave_data/1623-2007-11.html
+++ b/cave_data/1623-2007-11.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2007-11</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2007-11</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2007-12.html b/cave_data/1623-2007-12.html
index 228fdb011..4794469fb 100644
--- a/cave_data/1623-2007-12.html
+++ b/cave_data/1623-2007-12.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2007-12</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2007-12</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Rosa Waffelkeks H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2007-70.html b/cave_data/1623-2007-70.html
index e6225613b..bfa49ad10 100644
--- a/cave_data/1623-2007-70.html
+++ b/cave_data/1623-2007-70.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2007-70</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2007-70</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Spit Pot</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2007-72.html b/cave_data/1623-2007-72.html
index d097dcdc7..1fbc75057 100644
--- a/cave_data/1623-2007-72.html
+++ b/cave_data/1623-2007-72.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2007-72</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2007-72</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Batter Pot</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2009-01.html b/cave_data/1623-2009-01.html
index 3883a3bec..945e105d0 100644
--- a/cave_data/1623-2009-01.html
+++ b/cave_data/1623-2009-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2009-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2009-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Affenjagdhoehle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2009-02.html b/cave_data/1623-2009-02.html
index b2636a3f9..8729a7b0d 100644
--- a/cave_data/1623-2009-02.html
+++ b/cave_data/1623-2009-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2009-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2009-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schneeh&uuml;hnh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2009-03.html b/cave_data/1623-2009-03.html
index 4504bfc0f..67128de8a 100644
--- a/cave_data/1623-2009-03.html
+++ b/cave_data/1623-2009-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2009-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2009-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-201.html b/cave_data/1623-201.html
index 0b06bff9c..2e5d2d3cc 100644
--- a/cave_data/1623-201.html
+++ b/cave_data/1623-201.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-201</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-201</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Haftefelle Schacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2010-02.html b/cave_data/1623-2010-02.html
index 42894cac6..0c323aa00 100644
--- a/cave_data/1623-2010-02.html
+++ b/cave_data/1623-2010-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2010-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2010-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>zigzag cave</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2010-04.html b/cave_data/1623-2010-04.html
index 4d87e13af..7522aedca 100644
--- a/cave_data/1623-2010-04.html
+++ b/cave_data/1623-2010-04.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2010-04</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2010-04</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2010-06.html b/cave_data/1623-2010-06.html
index 2141d2066..792109c1b 100644
--- a/cave_data/1623-2010-06.html
+++ b/cave_data/1623-2010-06.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2010-06</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2010-06</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2010-07.html b/cave_data/1623-2010-07.html
index a5c53f372..f15f12baa 100644
--- a/cave_data/1623-2010-07.html
+++ b/cave_data/1623-2010-07.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2010-07</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2010-07</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Brunnen G schacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-HW-01.html b/cave_data/1623-2012-HW-01.html
index 24ad95491..899a84026 100644
--- a/cave_data/1623-2012-HW-01.html
+++ b/cave_data/1623-2012-HW-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-HW-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-HW-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1T-</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-HW-02.html b/cave_data/1623-2012-HW-02.html
index ba2b2c501..dc0d6d57c 100644
--- a/cave_data/1623-2012-HW-02.html
+++ b/cave_data/1623-2012-HW-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-HW-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-HW-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1T-</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-OK-01.html b/cave_data/1623-2012-OK-01.html
index 5358d2cac..aaab78e9d 100644
--- a/cave_data/1623-2012-OK-01.html
+++ b/cave_data/1623-2012-OK-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-OK-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-OK-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-OK-02.html b/cave_data/1623-2012-OK-02.html
index 131719989..c4a3dd1b2 100644
--- a/cave_data/1623-2012-OK-02.html
+++ b/cave_data/1623-2012-OK-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-OK-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-OK-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-OW-01.html b/cave_data/1623-2012-OW-01.html
index cecd60ad4..9432c9b70 100644
--- a/cave_data/1623-2012-OW-01.html
+++ b/cave_data/1623-2012-OW-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-OW-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-OW-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Birth Control Chamber</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-OW-7.html b/cave_data/1623-2012-OW-7.html
index cd85e15b5..c1ab3a576 100644
--- a/cave_data/1623-2012-OW-7.html
+++ b/cave_data/1623-2012-OW-7.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-OW-7</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-OW-7</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-dd-01.html b/cave_data/1623-2012-dd-01.html
index b94be41b9..f3576f127 100644
--- a/cave_data/1623-2012-dd-01.html
+++ b/cave_data/1623-2012-dd-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-dd-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-dd-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1T/-</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-dd-02.html b/cave_data/1623-2012-dd-02.html
index 17185983e..c340225d4 100644
--- a/cave_data/1623-2012-dd-02.html
+++ b/cave_data/1623-2012-dd-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-dd-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-dd-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-dd-03.html b/cave_data/1623-2012-dd-03.html
index 0f609b693..75a7c5c96 100644
--- a/cave_data/1623-2012-dd-03.html
+++ b/cave_data/1623-2012-dd-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-dd-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-dd-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-dd-04.html b/cave_data/1623-2012-dd-04.html
index 9334c8b26..047d16e8f 100644
--- a/cave_data/1623-2012-dd-04.html
+++ b/cave_data/1623-2012-dd-04.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-dd-04</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-dd-04</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-dd-06.html b/cave_data/1623-2012-dd-06.html
index b4649a84b..cfa398b80 100644
--- a/cave_data/1623-2012-dd-06.html
+++ b/cave_data/1623-2012-dd-06.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-dd-06</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-dd-06</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Big D H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-dd-07.html b/cave_data/1623-2012-dd-07.html
index 20a2f9141..e90863092 100644
--- a/cave_data/1623-2012-dd-07.html
+++ b/cave_data/1623-2012-dd-07.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-dd-07</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-dd-07</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-dd-09.html b/cave_data/1623-2012-dd-09.html
index c40ec4900..a7990f55d 100644
--- a/cave_data/1623-2012-dd-09.html
+++ b/cave_data/1623-2012-dd-09.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-dd-09</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-dd-09</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-dd-10.html b/cave_data/1623-2012-dd-10.html
index d1d070640..7dddb7f06 100644
--- a/cave_data/1623-2012-dd-10.html
+++ b/cave_data/1623-2012-dd-10.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-dd-10</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-dd-10</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-dd-11.html b/cave_data/1623-2012-dd-11.html
index e891dbfbb..3e1f6a949 100644
--- a/cave_data/1623-2012-dd-11.html
+++ b/cave_data/1623-2012-dd-11.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-dd-11</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-dd-11</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-ft-01.html b/cave_data/1623-2012-ft-01.html
index 0e2688f55..cbf77d3b6 100644
--- a/cave_data/1623-2012-ft-01.html
+++ b/cave_data/1623-2012-ft-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-ft-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-ft-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-ft-02.html b/cave_data/1623-2012-ft-02.html
index 9e08e6c1e..ac97494cf 100644
--- a/cave_data/1623-2012-ft-02.html
+++ b/cave_data/1623-2012-ft-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-ft-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-ft-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-js-01.html b/cave_data/1623-2012-js-01.html
index 465706d38..6cda0c72c 100644
--- a/cave_data/1623-2012-js-01.html
+++ b/cave_data/1623-2012-js-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-js-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-js-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Fruhlingsmiereschact</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-ns-01.html b/cave_data/1623-2012-ns-01.html
index 5e4096bc1..a86804576 100644
--- a/cave_data/1623-2012-ns-01.html
+++ b/cave_data/1623-2012-ns-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-ns-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-ns-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-ns-02.html b/cave_data/1623-2012-ns-02.html
index 9bb6112e1..3312420f7 100644
--- a/cave_data/1623-2012-ns-02.html
+++ b/cave_data/1623-2012-ns-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-ns-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-ns-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-ns-03.html b/cave_data/1623-2012-ns-03.html
index aa05ef025..6da22bac5 100644
--- a/cave_data/1623-2012-ns-03.html
+++ b/cave_data/1623-2012-ns-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-ns-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-ns-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Slime Cave</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>+</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-ns-05.html b/cave_data/1623-2012-ns-05.html
index 39a18e7aa..383a223b8 100644
--- a/cave_data/1623-2012-ns-05.html
+++ b/cave_data/1623-2012-ns-05.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-ns-05</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-ns-05</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-ns-06.html b/cave_data/1623-2012-ns-06.html
index 58f42d46c..344a9e246 100644
--- a/cave_data/1623-2012-ns-06.html
+++ b/cave_data/1623-2012-ns-06.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-ns-06</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-ns-06</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-ns-07.html b/cave_data/1623-2012-ns-07.html
index bf1e97647..1a63c15ad 100644
--- a/cave_data/1623-2012-ns-07.html
+++ b/cave_data/1623-2012-ns-07.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-ns-07</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-ns-07</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-ns-08.html b/cave_data/1623-2012-ns-08.html
index be488583d..e93879334 100644
--- a/cave_data/1623-2012-ns-08.html
+++ b/cave_data/1623-2012-ns-08.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-ns-08</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-ns-08</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-ns-09.html b/cave_data/1623-2012-ns-09.html
index 1a0130407..0280bed50 100644
--- a/cave_data/1623-2012-ns-09.html
+++ b/cave_data/1623-2012-ns-09.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-ns-09</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-ns-09</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Bergspitze Schacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T+</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-ns-10.html b/cave_data/1623-2012-ns-10.html
index bf351d542..3c5a9bf6e 100644
--- a/cave_data/1623-2012-ns-10.html
+++ b/cave_data/1623-2012-ns-10.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-ns-10</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-ns-10</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Kleine Baum H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-ns-12.html b/cave_data/1623-2012-ns-12.html
index 75dbc7816..0c177e68f 100644
--- a/cave_data/1623-2012-ns-12.html
+++ b/cave_data/1623-2012-ns-12.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-ns-12</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-ns-12</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-ns-14.html b/cave_data/1623-2012-ns-14.html
index 61b66a1bb..ccf4a7fbb 100644
--- a/cave_data/1623-2012-ns-14.html
+++ b/cave_data/1623-2012-ns-14.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-ns-14</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-ns-14</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-ns-15.html b/cave_data/1623-2012-ns-15.html
index 6458ca119..53ac4a038 100644
--- a/cave_data/1623-2012-ns-15.html
+++ b/cave_data/1623-2012-ns-15.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-ns-15</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-ns-15</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-sw-01.html b/cave_data/1623-2012-sw-01.html
index fafdd9541..71735337c 100644
--- a/cave_data/1623-2012-sw-01.html
+++ b/cave_data/1623-2012-sw-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-sw-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-sw-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-sw-02.html b/cave_data/1623-2012-sw-02.html
index 2607f8e91..6bcf9d6de 100644
--- a/cave_data/1623-2012-sw-02.html
+++ b/cave_data/1623-2012-sw-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-sw-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-sw-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2012-sw-03.html b/cave_data/1623-2012-sw-03.html
index 63d932c2f..4e2f567f9 100644
--- a/cave_data/1623-2012-sw-03.html
+++ b/cave_data/1623-2012-sw-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2012-sw-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2012-sw-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2013-03.html b/cave_data/1623-2013-03.html
index ccbea403a..ede7b28b7 100644
--- a/cave_data/1623-2013-03.html
+++ b/cave_data/1623-2013-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2013-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2013-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>AntsInYourPants</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2013-06.html b/cave_data/1623-2013-06.html
index 4db50a7e9..2f70d609f 100644
--- a/cave_data/1623-2013-06.html
+++ b/cave_data/1623-2013-06.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2013-06</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2013-06</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2013-BL-01.html b/cave_data/1623-2013-BL-01.html
index 5f672baf8..283111b4d 100644
--- a/cave_data/1623-2013-BL-01.html
+++ b/cave_data/1623-2013-BL-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2013-BL-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2013-BL-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Dwarf Death-wish hole</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2013-sw-01.html b/cave_data/1623-2013-sw-01.html
index 0b73356e2..f46bc7aa6 100644
--- a/cave_data/1623-2013-sw-01.html
+++ b/cave_data/1623-2013-sw-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2013-sw-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2013-sw-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2014-777.html b/cave_data/1623-2014-777.html
index a75b573e3..3a67d3546 100644
--- a/cave_data/1623-2014-777.html
+++ b/cave_data/1623-2014-777.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2014-777</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2014-777</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2014-867.html b/cave_data/1623-2014-867.html
index a969b416d..3a4a1e799 100644
--- a/cave_data/1623-2014-867.html
+++ b/cave_data/1623-2014-867.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2014-867</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2014-867</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2014-BL-01.html b/cave_data/1623-2014-BL-01.html
index d4b5c6b3f..d85d65a4e 100644
--- a/cave_data/1623-2014-BL-01.html
+++ b/cave_data/1623-2014-BL-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2014-BL-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2014-BL-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2014-BL888.html b/cave_data/1623-2014-BL888.html
index 520607704..dd481d08b 100644
--- a/cave_data/1623-2014-BL888.html
+++ b/cave_data/1623-2014-BL888.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2014-BL888</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2014-BL888</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Silber Fisch Hoehle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2014-MF-01.html b/cave_data/1623-2014-MF-01.html
index 7fb47f99f..fcdf10df1 100644
--- a/cave_data/1623-2014-MF-01.html
+++ b/cave_data/1623-2014-MF-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2014-MF-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2014-MF-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2014-MF-02.html b/cave_data/1623-2014-MF-02.html
index 62ab2147b..8ae154eaa 100644
--- a/cave_data/1623-2014-MF-02.html
+++ b/cave_data/1623-2014-MF-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2014-MF-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2014-MF-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2014-MF-03.html b/cave_data/1623-2014-MF-03.html
index 10de64d01..ede4bb661 100644
--- a/cave_data/1623-2014-MF-03.html
+++ b/cave_data/1623-2014-MF-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2014-MF-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2014-MF-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2014-NP-01.html b/cave_data/1623-2014-NP-01.html
index 3393125bd..4a51420e4 100644
--- a/cave_data/1623-2014-NP-01.html
+++ b/cave_data/1623-2014-NP-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2014-NP-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2014-NP-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2015-DL-01.html b/cave_data/1623-2015-DL-01.html
index ec7987ff1..c85f9681a 100644
--- a/cave_data/1623-2015-DL-01.html
+++ b/cave_data/1623-2015-DL-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2015-DL-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2015-DL-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Shagged Spit H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2015-DL-02.html b/cave_data/1623-2015-DL-02.html
index 0016b9117..f2213df0a 100644
--- a/cave_data/1623-2015-DL-02.html
+++ b/cave_data/1623-2015-DL-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2015-DL-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2015-DL-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Chossy Death Slope H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2017-21.html b/cave_data/1623-2017-21.html
index 35af688b5..1c4e87172 100755
--- a/cave_data/1623-2017-21.html
+++ b/cave_data/1623-2017-21.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2017-21</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2017-21</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2017-22.html b/cave_data/1623-2017-22.html
index b00cd76af..3d3383c8d 100755
--- a/cave_data/1623-2017-22.html
+++ b/cave_data/1623-2017-22.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2017-22</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2017-22</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2017-AA-01.html b/cave_data/1623-2017-AA-01.html
index 86dd99e72..c279667d9 100644
--- a/cave_data/1623-2017-AA-01.html
+++ b/cave_data/1623-2017-AA-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2017-AA-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2017-AA-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2017-AMS-01.html b/cave_data/1623-2017-AMS-01.html
index 945eb3504..608d5e6b3 100644
--- a/cave_data/1623-2017-AMS-01.html
+++ b/cave_data/1623-2017-AMS-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2017-AMS-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2017-AMS-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Delicate Bridge Cave</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2017-AMS-02.html b/cave_data/1623-2017-AMS-02.html
index c0b322580..63c85851c 100644
--- a/cave_data/1623-2017-AMS-02.html
+++ b/cave_data/1623-2017-AMS-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2017-AMS-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2017-AMS-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Elusive pit</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2017-NR-01.html b/cave_data/1623-2017-NR-01.html
index b3fd91131..ed14b953e 100644
--- a/cave_data/1623-2017-NR-01.html
+++ b/cave_data/1623-2017-NR-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2017-NR-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2017-NR-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2017-NR-02.html b/cave_data/1623-2017-NR-02.html
index 7bf83e90c..52e8022ab 100644
--- a/cave_data/1623-2017-NR-02.html
+++ b/cave_data/1623-2017-NR-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2017-NR-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2017-NR-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2018-NTU-01.html b/cave_data/1623-2018-NTU-01.html
index 7ec9ab229..249deec59 100644
--- a/cave_data/1623-2018-NTU-01.html
+++ b/cave_data/1623-2018-NTU-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2018-NTU-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2018-NTU-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2018-NTU-02.html b/cave_data/1623-2018-NTU-02.html
index 3bdb0f293..a28218d41 100644
--- a/cave_data/1623-2018-NTU-02.html
+++ b/cave_data/1623-2018-NTU-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2018-NTU-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2018-NTU-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2018-aa-01.html b/cave_data/1623-2018-aa-01.html
index b35721067..dae2ae3f5 100644
--- a/cave_data/1623-2018-aa-01.html
+++ b/cave_data/1623-2018-aa-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2018-aa-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2018-aa-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Achte auf die Lücke</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2018-ad-01.html b/cave_data/1623-2018-ad-01.html
index a234a07d7..34ee2c5e7 100644
--- a/cave_data/1623-2018-ad-01.html
+++ b/cave_data/1623-2018-ad-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2018-ad-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2018-ad-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2018-pf-01.html b/cave_data/1623-2018-pf-01.html
index 179561c5a..5fd22f5c2 100644
--- a/cave_data/1623-2018-pf-01.html
+++ b/cave_data/1623-2018-pf-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2018-pf-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2018-pf-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2018-pf-02.html b/cave_data/1623-2018-pf-02.html
index 2daaf690f..6f0a7e3f7 100644
--- a/cave_data/1623-2018-pf-02.html
+++ b/cave_data/1623-2018-pf-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2018-pf-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2018-pf-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2018-pf-03.html b/cave_data/1623-2018-pf-03.html
index ea371fc5c..452b2f152 100644
--- a/cave_data/1623-2018-pf-03.html
+++ b/cave_data/1623-2018-pf-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2018-pf-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2018-pf-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-202.html b/cave_data/1623-202.html
index f3e0a730c..1abed42fa 100644
--- a/cave_data/1623-202.html
+++ b/cave_data/1623-202.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-202</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-202</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Dominoschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2022-HH-01.html b/cave_data/1623-2022-HH-01.html
index cc20c5b1c..2cbcb9398 100644
--- a/cave_data/1623-2022-HH-01.html
+++ b/cave_data/1623-2022-HH-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2022-HH-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2022-HH-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2022-HH-02.html b/cave_data/1623-2022-HH-02.html
index 005de68fe..646756b94 100644
--- a/cave_data/1623-2022-HH-02.html
+++ b/cave_data/1623-2022-HH-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2022-HH-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2022-HH-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2022-HH-03.html b/cave_data/1623-2022-HH-03.html
index 422f3e1f4..92c2ee85c 100644
--- a/cave_data/1623-2022-HH-03.html
+++ b/cave_data/1623-2022-HH-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2022-HH-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2022-HH-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2022-HH-05.html b/cave_data/1623-2022-HH-05.html
index 557218d17..3cff84433 100644
--- a/cave_data/1623-2022-HH-05.html
+++ b/cave_data/1623-2022-HH-05.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2022-HH-05</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2022-HH-05</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2022-HH-06.html b/cave_data/1623-2022-HH-06.html
index 9364c70f2..6b32f3c35 100644
--- a/cave_data/1623-2022-HH-06.html
+++ b/cave_data/1623-2022-HH-06.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2022-HH-06</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2022-HH-06</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2022-HH-08.html b/cave_data/1623-2022-HH-08.html
index 9f4f7d921..bdf4e0036 100644
--- a/cave_data/1623-2022-HH-08.html
+++ b/cave_data/1623-2022-HH-08.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2022-HH-08</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2022-HH-08</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2022-HH-09.html b/cave_data/1623-2022-HH-09.html
index 73e40c757..53d3a39ef 100644
--- a/cave_data/1623-2022-HH-09.html
+++ b/cave_data/1623-2022-HH-09.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2022-HH-09</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2022-HH-09</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2022-HH-10.html b/cave_data/1623-2022-HH-10.html
index 2d10513a8..85b98d991 100644
--- a/cave_data/1623-2022-HH-10.html
+++ b/cave_data/1623-2022-HH-10.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2022-HH-10</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2022-HH-10</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2022-HH-11.html b/cave_data/1623-2022-HH-11.html
index c58298b0e..ff237d469 100644
--- a/cave_data/1623-2022-HH-11.html
+++ b/cave_data/1623-2022-HH-11.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2022-HH-11</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2022-HH-11</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2022-KB-01.html b/cave_data/1623-2022-KB-01.html
index b4d1ac22c..f625c9a44 100644
--- a/cave_data/1623-2022-KB-01.html
+++ b/cave_data/1623-2022-KB-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2022-KB-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2022-KB-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-ASH-01.html b/cave_data/1623-2023-ASH-01.html
index fc9a29c0f..071c7282d 100644
--- a/cave_data/1623-2023-ASH-01.html
+++ b/cave_data/1623-2023-ASH-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-ASH-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-ASH-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-ASH-02.html b/cave_data/1623-2023-ASH-02.html
index 33ec5e32a..5c7457266 100644
--- a/cave_data/1623-2023-ASH-02.html
+++ b/cave_data/1623-2023-ASH-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-ASH-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-ASH-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-ASH-03.html b/cave_data/1623-2023-ASH-03.html
index 179834b16..0f40aa205 100644
--- a/cave_data/1623-2023-ASH-03.html
+++ b/cave_data/1623-2023-ASH-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-ASH-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-ASH-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-ASH-04.html b/cave_data/1623-2023-ASH-04.html
index 698821877..dafdd68c1 100644
--- a/cave_data/1623-2023-ASH-04.html
+++ b/cave_data/1623-2023-ASH-04.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-ASH-04</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-ASH-04</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-ASH-06.html b/cave_data/1623-2023-ASH-06.html
index 6657fbae7..8655c4ce7 100644
--- a/cave_data/1623-2023-ASH-06.html
+++ b/cave_data/1623-2023-ASH-06.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-ASH-06</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-ASH-06</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-ASH-07.html b/cave_data/1623-2023-ASH-07.html
index 3092ee7a0..0155bec26 100644
--- a/cave_data/1623-2023-ASH-07.html
+++ b/cave_data/1623-2023-ASH-07.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-ASH-07</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-ASH-07</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-ASH-10.html b/cave_data/1623-2023-ASH-10.html
index 3d433190c..4bc789ad0 100644
--- a/cave_data/1623-2023-ASH-10.html
+++ b/cave_data/1623-2023-ASH-10.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-ASH-10</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-ASH-10</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-ASH-11.html b/cave_data/1623-2023-ASH-11.html
index d1496f43c..79d737fce 100644
--- a/cave_data/1623-2023-ASH-11.html
+++ b/cave_data/1623-2023-ASH-11.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-ASH-11</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-ASH-11</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-ASH-12.html b/cave_data/1623-2023-ASH-12.html
index 406f3b800..17d2e455e 100644
--- a/cave_data/1623-2023-ASH-12.html
+++ b/cave_data/1623-2023-ASH-12.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-ASH-12</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-ASH-12</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-ASH-13.html b/cave_data/1623-2023-ASH-13.html
index b332faafd..45bc1c56a 100644
--- a/cave_data/1623-2023-ASH-13.html
+++ b/cave_data/1623-2023-ASH-13.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-ASH-13</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-ASH-13</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-ASH-14.html b/cave_data/1623-2023-ASH-14.html
index 038e43123..79f53b1c2 100644
--- a/cave_data/1623-2023-ASH-14.html
+++ b/cave_data/1623-2023-ASH-14.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-ASH-14</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-ASH-14</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-BL-10.html b/cave_data/1623-2023-BL-10.html
index 5dc994507..002c8c838 100644
--- a/cave_data/1623-2023-BL-10.html
+++ b/cave_data/1623-2023-BL-10.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-BL-10</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-BL-10</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-BL-11.html b/cave_data/1623-2023-BL-11.html
index 121a59532..608006f50 100644
--- a/cave_data/1623-2023-BL-11.html
+++ b/cave_data/1623-2023-BL-11.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-BL-11</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-BL-11</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-EBH-01.html b/cave_data/1623-2023-EBH-01.html
index c74e4f88c..bb664e3ac 100644
--- a/cave_data/1623-2023-EBH-01.html
+++ b/cave_data/1623-2023-EBH-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-EBH-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-EBH-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-EBH-02.html b/cave_data/1623-2023-EBH-02.html
index eaa47f8c8..096c29b60 100644
--- a/cave_data/1623-2023-EBH-02.html
+++ b/cave_data/1623-2023-EBH-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-EBH-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-EBH-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-JS-02.html b/cave_data/1623-2023-JS-02.html
index 21fd33ad8..ef2b4129e 100644
--- a/cave_data/1623-2023-JS-02.html
+++ b/cave_data/1623-2023-JS-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-JS-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-JS-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T+</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-JS-03.html b/cave_data/1623-2023-JS-03.html
index 843e80d5f..392257000 100644
--- a/cave_data/1623-2023-JS-03.html
+++ b/cave_data/1623-2023-JS-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-JS-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-JS-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gardeners'World</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-JW-02.html b/cave_data/1623-2023-JW-02.html
index 77d5246ba..4fac7e572 100644
--- a/cave_data/1623-2023-JW-02.html
+++ b/cave_data/1623-2023-JW-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-JW-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-JW-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- the CUCC-defined areas shown in http://expo.survex.com/areas.htm -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-JW-03.html b/cave_data/1623-2023-JW-03.html
index 2f9103eb0..8b7e9d378 100644
--- a/cave_data/1623-2023-JW-03.html
+++ b/cave_data/1623-2023-JW-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-JW-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-JW-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- the CUCC-defined areas shown in http://expo.survex.com/areas.htm -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-MG-06.html b/cave_data/1623-2023-MG-06.html
index 417eb3f1e..8892afbe4 100644
--- a/cave_data/1623-2023-MG-06.html
+++ b/cave_data/1623-2023-MG-06.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-MG-06</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-MG-06</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- the CUCC-defined areas shown in http://expo.survex.com/areas.htm -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-OK-01.html b/cave_data/1623-2023-OK-01.html
index 08e5e38ba..87195af4b 100644
--- a/cave_data/1623-2023-OK-01.html
+++ b/cave_data/1623-2023-OK-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-OK-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-OK-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>The Bees Knees</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-hbrw-05.html b/cave_data/1623-2023-hbrw-05.html
index 94a731a27..d34b74650 100644
--- a/cave_data/1623-2023-hbrw-05.html
+++ b/cave_data/1623-2023-hbrw-05.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-hbrw-05</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-hbrw-05</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Rose Blumen Höhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-2023-mg-05.html b/cave_data/1623-2023-mg-05.html
index ac2683355..b261ffb46 100644
--- a/cave_data/1623-2023-mg-05.html
+++ b/cave_data/1623-2023-mg-05.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-mg-05</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-mg-05</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- the CUCC-defined areas shown in http://expo.survex.com/areas.htm -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-203.html b/cave_data/1623-203.html
index 2d7362e7a..28e8aee57 100644
--- a/cave_data/1623-203.html
+++ b/cave_data/1623-203.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-203</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-203</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Sonnenscheinschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-204.html b/cave_data/1623-204.html
index 988b12a28..9b93a9582 100644
--- a/cave_data/1623-204.html
+++ b/cave_data/1623-204.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-204</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-204</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Steinbr&uuml;ckenh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><area>2d</area><!-- the CUCC-defined areas shown in http://expo.survex.com/areas.htm -->
 <kataster_code>5/S x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-206.html b/cave_data/1623-206.html
index 44bb77cfd..d83672d28 100644
--- a/cave_data/1623-206.html
+++ b/cave_data/1623-206.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-206</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-206</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Sieben-Eingangsh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-207.html b/cave_data/1623-207.html
index fddbcb6de..fb3d90b6c 100644
--- a/cave_data/1623-207.html
+++ b/cave_data/1623-207.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-207</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-207</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plumpskloh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-208.html b/cave_data/1623-208.html
index ac1a1975b..9e6ff7eb5 100644
--- a/cave_data/1623-208.html
+++ b/cave_data/1623-208.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-208</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-208</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Quallenh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-209.html b/cave_data/1623-209.html
index 4071b96c7..7e8381027 100644
--- a/cave_data/1623-209.html
+++ b/cave_data/1623-209.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-209</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-209</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schistock-Absturzschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-21.html b/cave_data/1623-21.html
index da0c95719..dfac276d2 100644
--- a/cave_data/1623-21.html
+++ b/cave_data/1623-21.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-21</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-21</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Windloch im Egglgrube</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-210.html b/cave_data/1623-210.html
index 332fb6747..603120ab3 100644
--- a/cave_data/1623-210.html
+++ b/cave_data/1623-210.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-210</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-210</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Fettsack und Faulpelz h&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-215.html b/cave_data/1623-215.html
index fe1f87ce7..9b3c3c7d5 100644
--- a/cave_data/1623-215.html
+++ b/cave_data/1623-215.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-215</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-215</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Rufverbindungsh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-216.html b/cave_data/1623-216.html
index 39bad064d..be3b056b1 100644
--- a/cave_data/1623-216.html
+++ b/cave_data/1623-216.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-216</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-216</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Nichts 50</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-218.html b/cave_data/1623-218.html
index aa9d45476..f419efed5 100644
--- a/cave_data/1623-218.html
+++ b/cave_data/1623-218.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-218</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-218</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Hammerkopfabsturtzh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-219.html b/cave_data/1623-219.html
index 3796020c8..6c38fb4de 100644
--- a/cave_data/1623-219.html
+++ b/cave_data/1623-219.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-219</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-219</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Tertaeingfester</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-22.html b/cave_data/1623-22.html
index 5890a43a9..4f66cd878 100644
--- a/cave_data/1623-22.html
+++ b/cave_data/1623-22.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-22</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-22</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Spiralschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-220.html b/cave_data/1623-220.html
index 908af1e49..dbacec2ec 100644
--- a/cave_data/1623-220.html
+++ b/cave_data/1623-220.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-220</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-220</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Kennedy Alternative</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-222.html b/cave_data/1623-222.html
index a9c8eff3f..a0a990c93 100644
--- a/cave_data/1623-222.html
+++ b/cave_data/1623-222.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-222</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-222</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>G&ouml;sserh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-223.html b/cave_data/1623-223.html
index 0d08fb9ca..c3f7967a3 100644
--- a/cave_data/1623-223.html
+++ b/cave_data/1623-223.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-223</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-223</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Eggenbergschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-224.html b/cave_data/1623-224.html
index 4d670d8e7..6d04c1a86 100644
--- a/cave_data/1623-224.html
+++ b/cave_data/1623-224.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-224</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-224</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Toplesscanyonh&ouml;hle </official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-23.html b/cave_data/1623-23.html
index 69adf8aae..a2c668e73 100644
--- a/cave_data/1623-23.html
+++ b/cave_data/1623-23.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-23</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-23</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Steinbockh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/t/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-230.html b/cave_data/1623-230.html
index f25ec225f..b0bbbfe57 100644
--- a/cave_data/1623-230.html
+++ b/cave_data/1623-230.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-230</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-230</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Verge&szlig;lichheith&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>+(?)</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-232.html b/cave_data/1623-232.html
index 6912fef84..61a301885 100644
--- a/cave_data/1623-232.html
+++ b/cave_data/1623-232.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-232</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-232</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Grie&szlig;kogelschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S x </kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-234.html b/cave_data/1623-234.html
index 2b5f91f8f..ebeba5f44 100644
--- a/cave_data/1623-234.html
+++ b/cave_data/1623-234.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-234</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-234</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Hauchh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>3/S/W x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-238.html b/cave_data/1623-238.html
index 2a9799107..d734a44fa 100644
--- a/cave_data/1623-238.html
+++ b/cave_data/1623-238.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-238</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-238</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Flinkameiseschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-239.html b/cave_data/1623-239.html
index 42ba30f8a..890944f59 100644
--- a/cave_data/1623-239.html
+++ b/cave_data/1623-239.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-239</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-239</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Rock'n'Roll H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>3/S/T x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-24.html b/cave_data/1623-24.html
index a149e7bd0..903fbde36 100644
--- a/cave_data/1623-24.html
+++ b/cave_data/1623-24.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-24</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-24</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schachth&ouml;hle bei Egglgrubenalm</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-240.html b/cave_data/1623-240.html
index 185e2df49..2fec20fdc 100644
--- a/cave_data/1623-240.html
+++ b/cave_data/1623-240.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-240</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-240</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gew&ouml;lbeschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-241.html b/cave_data/1623-241.html
index 0dcc1d210..724095a46 100644
--- a/cave_data/1623-241.html
+++ b/cave_data/1623-241.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-241</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-241</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Dreieckh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-242.html b/cave_data/1623-242.html
index cbe3586df..1fdb93959 100644
--- a/cave_data/1623-242.html
+++ b/cave_data/1623-242.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-242</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-242</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Tropfelh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S/W +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-243.html b/cave_data/1623-243.html
index a0fc020cb..bee1455ae 100644
--- a/cave_data/1623-243.html
+++ b/cave_data/1623-243.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-243</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-243</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>GNDN H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S/E x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-244.html b/cave_data/1623-244.html
index 69b2bf071..29b7102bd 100644
--- a/cave_data/1623-244.html
+++ b/cave_data/1623-244.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-244</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-244</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>D&uuml;nne Faulpelz H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-245.html b/cave_data/1623-245.html
index ee662f0dc..7acda9c84 100644
--- a/cave_data/1623-245.html
+++ b/cave_data/1623-245.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-245</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-245</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Weizeneish&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/E x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-246.html b/cave_data/1623-246.html
index a4ac403b1..c2a6adde4 100644
--- a/cave_data/1623-246.html
+++ b/cave_data/1623-246.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-246</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-246</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Damoclesschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-247.html b/cave_data/1623-247.html
index 802d24489..a1bafb68e 100644
--- a/cave_data/1623-247.html
+++ b/cave_data/1623-247.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-247</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-247</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Kartoffelbreih&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-25.html b/cave_data/1623-25.html
index 7c35d6b4c..760f39d01 100644
--- a/cave_data/1623-25.html
+++ b/cave_data/1623-25.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-25</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-25</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Mauskothh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-251.html b/cave_data/1623-251.html
index f8cc47acc..80266a642 100644
--- a/cave_data/1623-251.html
+++ b/cave_data/1623-251.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-251</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-251</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>In Ihrer Gesichtsh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-252.html b/cave_data/1623-252.html
index 0963e8a3f..9c04e7e10 100644
--- a/cave_data/1623-252.html
+++ b/cave_data/1623-252.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-252</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-252</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Bunnyschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S/T x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-253.html b/cave_data/1623-253.html
index f9cdc5bb8..56d2662aa 100644
--- a/cave_data/1623-253.html
+++ b/cave_data/1623-253.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-253</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-253</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Rundreiseh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-254.html b/cave_data/1623-254.html
index 3862092d0..25185fe0f 100644
--- a/cave_data/1623-254.html
+++ b/cave_data/1623-254.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-254</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-254</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Kindergartenh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S/T x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-255.html b/cave_data/1623-255.html
index 6cc43c61d..812dd0d96 100644
--- a/cave_data/1623-255.html
+++ b/cave_data/1623-255.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-255</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-255</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Brecheisenh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-256.html b/cave_data/1623-256.html
index bf3ceee9c..78c3704c9 100644
--- a/cave_data/1623-256.html
+++ b/cave_data/1623-256.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-256</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-256</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Nischeh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-257.html b/cave_data/1623-257.html
index 7c0015a8d..1044ce6f8 100644
--- a/cave_data/1623-257.html
+++ b/cave_data/1623-257.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-257</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-257</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Daumenkinoh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-258.html b/cave_data/1623-258.html
index db0e80423..97b12eb1d 100644
--- a/cave_data/1623-258.html
+++ b/cave_data/1623-258.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-258</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-258</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Tunnockschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><area>2d</area><!-- the CUCC-defined areas shown in http://expo.survex.com/areas.htm -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-259.html b/cave_data/1623-259.html
index 02038bbbe..7231e38be 100644
--- a/cave_data/1623-259.html
+++ b/cave_data/1623-259.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-259</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-259</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gassischacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-26.html b/cave_data/1623-26.html
index 88077016e..50b28f317 100644
--- a/cave_data/1623-26.html
+++ b/cave_data/1623-26.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-26</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-26</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Wasserschlinger I</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/(W) +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-260.html b/cave_data/1623-260.html
index a3442a7d2..430353157 100644
--- a/cave_data/1623-260.html
+++ b/cave_data/1623-260.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-260</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-260</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Rumpelkammer (e08)</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-261.html b/cave_data/1623-261.html
index f2a0614a1..aea3702c2 100644
--- a/cave_data/1623-261.html
+++ b/cave_data/1623-261.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-261</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-261</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>H&ouml;hle f&uuml;r kleine Jungs (e10)</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-262.html b/cave_data/1623-262.html
index 3d08723c4..30567c5cd 100644
--- a/cave_data/1623-262.html
+++ b/cave_data/1623-262.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-262</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-262</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Der Pseudobringer (e18)</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-264.html b/cave_data/1623-264.html
index be749f8b3..0ee7bda08 100644
--- a/cave_data/1623-264.html
+++ b/cave_data/1623-264.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-264</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-264</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Balkonh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><area>2d</area><!-- the CUCC-defined areas shown in http://expo.survex.com/areas.htm -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-267.html b/cave_data/1623-267.html
index c8c08a600..91cdd2d16 100644
--- a/cave_data/1623-267.html
+++ b/cave_data/1623-267.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-267</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-267</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Verstecktentalh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-268.html b/cave_data/1623-268.html
index 29fa2f0e8..31873b483 100644
--- a/cave_data/1623-268.html
+++ b/cave_data/1623-268.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-268</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-268</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Neunzehn Yahr Wartezeit H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-269.html b/cave_data/1623-269.html
index 87779e642..0c95ac2a4 100644
--- a/cave_data/1623-269.html
+++ b/cave_data/1623-269.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-269</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-269</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Maraehöhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><area>1d</area><!-- the CUCC-defined areas shown in http://expo.survex.com/areas.htm -->
 <kataster_code>1/T =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-27.html b/cave_data/1623-27.html
index 2e8aaf28e..8bf2e6af0 100644
--- a/cave_data/1623-27.html
+++ b/cave_data/1623-27.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-27</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-27</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Wasserschlinger II</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/(W) +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-270.html b/cave_data/1623-270.html
index 7eb14330d..8abd14b6b 100644
--- a/cave_data/1623-270.html
+++ b/cave_data/1623-270.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-270</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-270</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Tote Gemse Höhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-271.html b/cave_data/1623-271.html
index 25bde14cc..48f0fb0b9 100644
--- a/cave_data/1623-271.html
+++ b/cave_data/1623-271.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-271</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-271</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Korokoroh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-272.html b/cave_data/1623-272.html
index b575b94b8..71f99a47a 100644
--- a/cave_data/1623-272.html
+++ b/cave_data/1623-272.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-272</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-272</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Zweite Kugel Höhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>3S</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-273.html b/cave_data/1623-273.html
index 3ffea4d33..ac1eeac49 100644
--- a/cave_data/1623-273.html
+++ b/cave_data/1623-273.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-273</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-273</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Ferkelh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-274.html b/cave_data/1623-274.html
index 4d3146779..6e2a97cc4 100644
--- a/cave_data/1623-274.html
+++ b/cave_data/1623-274.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-274</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-274</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Verlorener Bleistift H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-277.html b/cave_data/1623-277.html
index f9909043a..5d0083b56 100644
--- a/cave_data/1623-277.html
+++ b/cave_data/1623-277.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-277</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-277</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schlechte Wettervorhersage</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-28.html b/cave_data/1623-28.html
index 7e013ca42..e6b93d032 100644
--- a/cave_data/1623-28.html
+++ b/cave_data/1623-28.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-28</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-28</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Augsteckh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/t/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-281.html b/cave_data/1623-281.html
index bf3712ead..eb6a4c098 100644
--- a/cave_data/1623-281.html
+++ b/cave_data/1623-281.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-281</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-281</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gr&uuml;nstein Eish&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-283.html b/cave_data/1623-283.html
index 2d1912309..3dcf35838 100644
--- a/cave_data/1623-283.html
+++ b/cave_data/1623-283.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-283</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-283</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Organh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-285.html b/cave_data/1623-285.html
index 0360cc7c0..c75038b26 100644
--- a/cave_data/1623-285.html
+++ b/cave_data/1623-285.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-285</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-285</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Geknackter Packsackhöhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-286.html b/cave_data/1623-286.html
index c30e75edf..22f54c41c 100644
--- a/cave_data/1623-286.html
+++ b/cave_data/1623-286.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-286</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-286</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Radschlaghöhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-287.html b/cave_data/1623-287.html
index cfb03b220..78d0d4963 100644
--- a/cave_data/1623-287.html
+++ b/cave_data/1623-287.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-287</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-287</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Nach Osten Gefahren H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-288.html b/cave_data/1623-288.html
index 09d033683..b2319cd5a 100644
--- a/cave_data/1623-288.html
+++ b/cave_data/1623-288.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-288</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-288</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Lila Lupinenh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-289.html b/cave_data/1623-289.html
index 3583f5284..e23237f6f 100644
--- a/cave_data/1623-289.html
+++ b/cave_data/1623-289.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-289</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-289</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>H&ouml;hle der guten Hoffnung</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-29.html b/cave_data/1623-29.html
index ec5634901..30d6fc1e0 100644
--- a/cave_data/1623-29.html
+++ b/cave_data/1623-29.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-29</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-29</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwarzmoosloch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-290.html b/cave_data/1623-290.html
index c3244db07..f1bf3a17a 100644
--- a/cave_data/1623-290.html
+++ b/cave_data/1623-290.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-290</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-290</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Fischgesicht H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>5/Sx</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-291.html b/cave_data/1623-291.html
index 4c00c38a9..5bac508c9 100644
--- a/cave_data/1623-291.html
+++ b/cave_data/1623-291.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-291</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-291</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gl&uuml;ckliche Schmetterlingsh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-292.html b/cave_data/1623-292.html
index 24bf33eac..ace676328 100644
--- a/cave_data/1623-292.html
+++ b/cave_data/1623-292.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-292</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-292</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Motte H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-293.html b/cave_data/1623-293.html
index be89c8b0f..a973c23f9 100644
--- a/cave_data/1623-293.html
+++ b/cave_data/1623-293.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-293</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-293</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Blocklufth&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-294.html b/cave_data/1623-294.html
index d8d96dbc3..f830073c1 100644
--- a/cave_data/1623-294.html
+++ b/cave_data/1623-294.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-294</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-294</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Rhabarberh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-295.html b/cave_data/1623-295.html
index 712f8422a..b57483d21 100644
--- a/cave_data/1623-295.html
+++ b/cave_data/1623-295.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-295</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-295</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Keine Wassermelone H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-296.html b/cave_data/1623-296.html
index e34a518b6..c0bf7eab2 100644
--- a/cave_data/1623-296.html
+++ b/cave_data/1623-296.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-296</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-296</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Doppel Gemse H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-297.html b/cave_data/1623-297.html
index 124fbfe60..5ec0bac40 100644
--- a/cave_data/1623-297.html
+++ b/cave_data/1623-297.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-297</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-297</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Haizahnh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-298.html b/cave_data/1623-298.html
index 3abe15a83..0401935b5 100644
--- a/cave_data/1623-298.html
+++ b/cave_data/1623-298.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-298</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-298</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Zufallsschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-3.html b/cave_data/1623-3.html
index a9b4fceb0..47df248ce 100644
--- a/cave_data/1623-3.html
+++ b/cave_data/1623-3.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-3</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-3</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gellerofen</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T(W) +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-30.html b/cave_data/1623-30.html
index ede06fb36..8be96e593 100644
--- a/cave_data/1623-30.html
+++ b/cave_data/1623-30.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-30</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-30</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Grundloses Loch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-303.html b/cave_data/1623-303.html
index c57816c25..b1ce1e491 100644
--- a/cave_data/1623-303.html
+++ b/cave_data/1623-303.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-303</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-303</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Höhle bei der Ankunft tot</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-304.html b/cave_data/1623-304.html
index b28812589..047fde77e 100644
--- a/cave_data/1623-304.html
+++ b/cave_data/1623-304.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-mg-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-mg-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Doppellochhöhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-306.html b/cave_data/1623-306.html
index e4353f2fa..eafc0e9ae 100644
--- a/cave_data/1623-306.html
+++ b/cave_data/1623-306.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-ASH-17</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-ASH-17</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gollum Grotte</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-314.html b/cave_data/1623-314.html
index 6295ca685..263ecb415 100644
--- a/cave_data/1623-314.html
+++ b/cave_data/1623-314.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-KT-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-KT-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Silbermottenhöhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-315.html b/cave_data/1623-315.html
index 5dd8686ad..12bcf0e8c 100644
--- a/cave_data/1623-315.html
+++ b/cave_data/1623-315.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-JSS-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-JSS-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Mendip-Männerhöhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>+</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-316.html b/cave_data/1623-316.html
index 88aceed1f..005f16aa7 100644
--- a/cave_data/1623-316.html
+++ b/cave_data/1623-316.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-KT-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-KT-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Katzenaugenhöhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>-</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-317.html b/cave_data/1623-317.html
index 443b3bfc5..3bd89315b 100644
--- a/cave_data/1623-317.html
+++ b/cave_data/1623-317.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-ft-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-ft-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Mahlstromhöhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-318.html b/cave_data/1623-318.html
index 8ab4e835c..68434a539 100644
--- a/cave_data/1623-318.html
+++ b/cave_data/1623-318.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2023-lc-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-2023-lc-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Tempesthöhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-32.html b/cave_data/1623-32.html
index c65278f05..c2354f8e0 100644
--- a/cave_data/1623-32.html
+++ b/cave_data/1623-32.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-32</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-32</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Windloch am St&ouml;gerweg</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-33.html b/cave_data/1623-33.html
index 79b6c1685..597f4cac6 100644
--- a/cave_data/1623-33.html
+++ b/cave_data/1623-33.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-33</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-33</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schichtgrenzenh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-34.html b/cave_data/1623-34.html
index 6bd11a24a..4a89968fb 100644
--- a/cave_data/1623-34.html
+++ b/cave_data/1623-34.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-34</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-34</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>H&ouml;hle am Kratzer I</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-35.html b/cave_data/1623-35.html
index 8a8bd58f0..a33edbeba 100644
--- a/cave_data/1623-35.html
+++ b/cave_data/1623-35.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-35</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-35</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Dr. Kerschner H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S/T x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-37.html b/cave_data/1623-37.html
index d40c504c0..85b79fb35 100644
--- a/cave_data/1623-37.html
+++ b/cave_data/1623-37.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-37</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-37</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schachtgruppe beim Hinterer Schwarzmooskogel</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-38.html b/cave_data/1623-38.html
index 11bd73eb7..b690a7fc3 100644
--- a/cave_data/1623-38.html
+++ b/cave_data/1623-38.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-38</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-38</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Algenh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-39.html b/cave_data/1623-39.html
index 92cf61c6c..d62dc81ae 100644
--- a/cave_data/1623-39.html
+++ b/cave_data/1623-39.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-39</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-39</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>SCHWA h&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-4.html b/cave_data/1623-4.html
index fc0d25d6d..e0f5bb76b 100644
--- a/cave_data/1623-4.html
+++ b/cave_data/1623-4.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-4</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-4</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Ritscherbachh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T(W) +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-40.html b/cave_data/1623-40.html
index eaf206272..4f308f2ef 100644
--- a/cave_data/1623-40.html
+++ b/cave_data/1623-40.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-40</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-40</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwarzmooskogeleish&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>7/S/T/E x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-41.html b/cave_data/1623-41.html
index e86d3a01a..1d1915140 100644
--- a/cave_data/1623-41.html
+++ b/cave_data/1623-41.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-41</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-41</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Stellerwegh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>7/S/T/E x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-42.html b/cave_data/1623-42.html
index d8ed74a97..df4002627 100644
--- a/cave_data/1623-42.html
+++ b/cave_data/1623-42.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-42</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-42</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Wasserschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-43.html b/cave_data/1623-43.html
index e6971c56f..db3549304 100644
--- a/cave_data/1623-43.html
+++ b/cave_data/1623-43.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-43</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-43</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>H&ouml;hle beim Wackelstein</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T+</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-44.html b/cave_data/1623-44.html
index 730b271a4..ec866c0c7 100644
--- a/cave_data/1623-44.html
+++ b/cave_data/1623-44.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-44</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-44</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>H&ouml;hle am Kratzer II</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T+</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-45.html b/cave_data/1623-45.html
index 38fc15fb2..209f96291 100644
--- a/cave_data/1623-45.html
+++ b/cave_data/1623-45.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-45</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-45</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Dannerschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S/E +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-46.html b/cave_data/1623-46.html
index 822ac2f14..691a71e01 100644
--- a/cave_data/1623-46.html
+++ b/cave_data/1623-46.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-46</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-46</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Engelbrechth&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-47.html b/cave_data/1623-47.html
index 8f9142c1b..6c60d2723 100644
--- a/cave_data/1623-47.html
+++ b/cave_data/1623-47.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-47</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-47</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>SCHWA h&ouml;hle 47</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-48.html b/cave_data/1623-48.html
index d763edfcd..6eeeb4f15 100644
--- a/cave_data/1623-48.html
+++ b/cave_data/1623-48.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-48</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-48</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>SCHWA h&ouml;hle 48</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-49.html b/cave_data/1623-49.html
index 03faa89d8..b3bccf60e 100644
--- a/cave_data/1623-49.html
+++ b/cave_data/1623-49.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-49</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-49</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>SCHWA h&ouml;hle 49</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-5.html b/cave_data/1623-5.html
index d6f4fcc0b..181120820 100644
--- a/cave_data/1623-5.html
+++ b/cave_data/1623-5.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-5</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-5</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Holzknechtbr&uuml;nndlloch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S(W) +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-50.html b/cave_data/1623-50.html
index 543b6e6f5..cb93f6d97 100644
--- a/cave_data/1623-50.html
+++ b/cave_data/1623-50.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-50</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-50</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>SCHWA h&ouml;hle 50</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-51.html b/cave_data/1623-51.html
index 82840b755..14e5145f8 100644
--- a/cave_data/1623-51.html
+++ b/cave_data/1623-51.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-51</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-51</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>H&ouml;hlen 1-3 in Wei&szlig;e Wand</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-52.html b/cave_data/1623-52.html
index ef35e2ea0..e6cce6ae2 100644
--- a/cave_data/1623-52.html
+++ b/cave_data/1623-52.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-52</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-52</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Sennerkeller &amp; Sauloch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S/W +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-53.html b/cave_data/1623-53.html
index 253b5ae0e..2125c91c0 100644
--- a/cave_data/1623-53.html
+++ b/cave_data/1623-53.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-53</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-53</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gellerli&auml;ger</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-54.html b/cave_data/1623-54.html
index c7b11e6e9..b4b52ecaa 100644
--- a/cave_data/1623-54.html
+++ b/cave_data/1623-54.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-54</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-54</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Seeh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-55.html b/cave_data/1623-55.html
index 17cc6f50c..c7e1bd547 100644
--- a/cave_data/1623-55.html
+++ b/cave_data/1623-55.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-55</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-55</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schachth&ouml;hle west. Hochanger</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S/T =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-56.html b/cave_data/1623-56.html
index 62a18adc1..523c7875f 100644
--- a/cave_data/1623-56.html
+++ b/cave_data/1623-56.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-56</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-56</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Hornsteinh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-57.html b/cave_data/1623-57.html
index ec194fda5..cc05d51ed 100644
--- a/cave_data/1623-57.html
+++ b/cave_data/1623-57.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-57</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-57</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>H&ouml;hle unterhalb der Schafkirche</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-58.html b/cave_data/1623-58.html
index abc451ec2..3205a6140 100644
--- a/cave_data/1623-58.html
+++ b/cave_data/1623-58.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-58</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-58</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>H&ouml;hle unterhalb ab Pauli-Loch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-59.html b/cave_data/1623-59.html
index 7f5e2e4a9..649a0c975 100644
--- a/cave_data/1623-59.html
+++ b/cave_data/1623-59.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-59</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-59</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Bruchshutth&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T+</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-6.html b/cave_data/1623-6.html
index 7f330a754..87c44ac79 100644
--- a/cave_data/1623-6.html
+++ b/cave_data/1623-6.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-6</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-6</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Quelle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>0/W +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-60.html b/cave_data/1623-60.html
index 9b2da4563..d6ab71256 100644
--- a/cave_data/1623-60.html
+++ b/cave_data/1623-60.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-60</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-60</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schacht I-IV bei Gschwandalm</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-61.html b/cave_data/1623-61.html
index 7e8d5b2cc..18661ab44 100644
--- a/cave_data/1623-61.html
+++ b/cave_data/1623-61.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-61</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-61</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gemsbockh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-62.html b/cave_data/1623-62.html
index a4b7f2a64..f7242346b 100644
--- a/cave_data/1623-62.html
+++ b/cave_data/1623-62.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-62</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-62</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Dolinenh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-63.html b/cave_data/1623-63.html
index 9a081abcb..9b8d128bb 100644
--- a/cave_data/1623-63.html
+++ b/cave_data/1623-63.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-63</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-63</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Pseudoskorpionh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-64.html b/cave_data/1623-64.html
index 4dbb4762f..db3eb1298 100644
--- a/cave_data/1623-64.html
+++ b/cave_data/1623-64.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-64</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-64</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gr. Durchgangsh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-65.html b/cave_data/1623-65.html
index 50cc0be7d..58e7a8f0f 100644
--- a/cave_data/1623-65.html
+++ b/cave_data/1623-65.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-65</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-65</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Widderh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T+</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-66.html b/cave_data/1623-66.html
index 095f4aee7..3440a33c6 100644
--- a/cave_data/1623-66.html
+++ b/cave_data/1623-66.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-66</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-66</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>L&ouml;ckerwegh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T+</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-67.html b/cave_data/1623-67.html
index bc6903cfc..a617187e9 100644
--- a/cave_data/1623-67.html
+++ b/cave_data/1623-67.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-67</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-67</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Biwakh&ouml;hle am Loser</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-68.html b/cave_data/1623-68.html
index b5e35b3d8..f8f34e8a1 100644
--- a/cave_data/1623-68.html
+++ b/cave_data/1623-68.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-68</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-68</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Kleine B&auml;renh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-69.html b/cave_data/1623-69.html
index 5d3c7b6da..436fb7e9a 100644
--- a/cave_data/1623-69.html
+++ b/cave_data/1623-69.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-69</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-69</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schacht am Gschirr</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-7.html b/cave_data/1623-7.html
index 09c0c6624..f0142e435 100644
--- a/cave_data/1623-7.html
+++ b/cave_data/1623-7.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-7</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-7</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Bachschl&auml;g</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/(W) +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-70.html b/cave_data/1623-70.html
index f5b7896f4..9beb67c53 100644
--- a/cave_data/1623-70.html
+++ b/cave_data/1623-70.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-70</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-70</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schneckenloch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-71.html b/cave_data/1623-71.html
index 69144f19a..e0d0a7874 100644
--- a/cave_data/1623-71.html
+++ b/cave_data/1623-71.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-71</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-71</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Fledermaush&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S/W +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-72.html b/cave_data/1623-72.html
index 918bec667..ee2ad4387 100644
--- a/cave_data/1623-72.html
+++ b/cave_data/1623-72.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-72</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-72</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Skeletth&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-73.html b/cave_data/1623-73.html
index 814e097be..aa180c9c8 100644
--- a/cave_data/1623-73.html
+++ b/cave_data/1623-73.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-73</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-73</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Suppentellerschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-74.html b/cave_data/1623-74.html
index 9bb40d03c..9a77bdb29 100644
--- a/cave_data/1623-74.html
+++ b/cave_data/1623-74.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-74</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-74</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schneckenhaush&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-75.html b/cave_data/1623-75.html
index d17677200..88e6c6661 100644
--- a/cave_data/1623-75.html
+++ b/cave_data/1623-75.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-75</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-75</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Wisenth&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-77.html b/cave_data/1623-77.html
index 10151a757..01d581398 100644
--- a/cave_data/1623-77.html
+++ b/cave_data/1623-77.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-77</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-77</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Fichtenschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-78.html b/cave_data/1623-78.html
index 7b36ddeba..aece4558f 100644
--- a/cave_data/1623-78.html
+++ b/cave_data/1623-78.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-78</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-78</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwaben(schacht)h&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>5/S/t/E x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-79.html b/cave_data/1623-79.html
index 9d4334016..8212b1e9a 100644
--- a/cave_data/1623-79.html
+++ b/cave_data/1623-79.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-79</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-79</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Badenerschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-8.html b/cave_data/1623-8.html
index 3980eaff1..68862fa63 100644
--- a/cave_data/1623-8.html
+++ b/cave_data/1623-8.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-8</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-8</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Gro&szlig;es Loserloch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-84.html b/cave_data/1623-84.html
index c59a10f35..4a609abb3 100644
--- a/cave_data/1623-84.html
+++ b/cave_data/1623-84.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-84</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-84</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa H&ouml;hle 84</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-86.html b/cave_data/1623-86.html
index b661e18bb..0771d2079 100644
--- a/cave_data/1623-86.html
+++ b/cave_data/1623-86.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-86</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-86</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 86</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-87.html b/cave_data/1623-87.html
index ca3d37e4c..cab0f81f4 100644
--- a/cave_data/1623-87.html
+++ b/cave_data/1623-87.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-87</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-87</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schacht 87 neben St&ouml;gerweg</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>3/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-88.html b/cave_data/1623-88.html
index f5d5deea5..40c431aca 100644
--- a/cave_data/1623-88.html
+++ b/cave_data/1623-88.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-88</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-88</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>L&auml;rchenschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>3/S/T x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-89.html b/cave_data/1623-89.html
index 4a7abb02c..26c6d86ae 100644
--- a/cave_data/1623-89.html
+++ b/cave_data/1623-89.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-89</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-89</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schwa Schacht 89</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-9.html b/cave_data/1623-9.html
index 9ba57942f..275be6cc8 100644
--- a/cave_data/1623-9.html
+++ b/cave_data/1623-9.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-9</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-9</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Kleines Loserloch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-90.html b/cave_data/1623-90.html
index f11f06eb2..8540fb118 100644
--- a/cave_data/1623-90.html
+++ b/cave_data/1623-90.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-90</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-90</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Br&auml;u Schacht 90</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-91.html b/cave_data/1623-91.html
index b1c1d73a1..41aa78ecc 100644
--- a/cave_data/1623-91.html
+++ b/cave_data/1623-91.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-91</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-91</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Br&auml;u Schacht 91</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-92.html b/cave_data/1623-92.html
index d1532f277..5787ab571 100644
--- a/cave_data/1623-92.html
+++ b/cave_data/1623-92.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-92</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-92</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Br&auml;u Schacht 92</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-97.html b/cave_data/1623-97.html
index eed539140..10b2ef185 100644
--- a/cave_data/1623-97.html
+++ b/cave_data/1623-97.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-97</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-97</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schneewindschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>4/S/W x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-98.html b/cave_data/1623-98.html
index 820eb97e9..7373e11fb 100644
--- a/cave_data/1623-98.html
+++ b/cave_data/1623-98.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-98</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-98</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Plateau Schacht 98</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-A1.html b/cave_data/1623-A1.html
index 14d753d27..ef59965bf 100644
--- a/cave_data/1623-A1.html
+++ b/cave_data/1623-A1.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-A1</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-A1</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>CUCC 1976/A1</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-B1.html b/cave_data/1623-B1.html
index d32afcaed..29d76aaec 100644
--- a/cave_data/1623-B1.html
+++ b/cave_data/1623-B1.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-B1</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-B1</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>CUCC 1976/B1</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-B10.html b/cave_data/1623-B10.html
index eb439d3b0..0a25f4e28 100644
--- a/cave_data/1623-B10.html
+++ b/cave_data/1623-B10.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-B10</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-B10</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>CUCC 1976/B10</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-B2.html b/cave_data/1623-B2.html
index b368c3441..20b2b738f 100644
--- a/cave_data/1623-B2.html
+++ b/cave_data/1623-B2.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-B2</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-B2</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>CUCC 1976/B2</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-B3.html b/cave_data/1623-B3.html
index 8e7ce5d2d..3a914a97c 100644
--- a/cave_data/1623-B3.html
+++ b/cave_data/1623-B3.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-B3</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-B3</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>CUCC 1976/B3</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-B4.html b/cave_data/1623-B4.html
index 0415f0e15..1b774d05f 100644
--- a/cave_data/1623-B4.html
+++ b/cave_data/1623-B4.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-B4</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-B4</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>CUCC 1976/B4</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-B5.html b/cave_data/1623-B5.html
index df8d07fc8..fb697e043 100644
--- a/cave_data/1623-B5.html
+++ b/cave_data/1623-B5.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-B5</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-B5</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>CUCC 1976/B5</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-B6.html b/cave_data/1623-B6.html
index eb47964fd..16bb0be09 100644
--- a/cave_data/1623-B6.html
+++ b/cave_data/1623-B6.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-B6</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-B6</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>CUCC 1976/B6</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-BS1-15.html b/cave_data/1623-BS1-15.html
index b063b0604..d06e5c46d 100644
--- a/cave_data/1623-BS1-15.html
+++ b/cave_data/1623-BS1-15.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-BS1-15</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-BS1-15</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-BS16.html b/cave_data/1623-BS16.html
index 5871cf98c..29ae48e6a 100644
--- a/cave_data/1623-BS16.html
+++ b/cave_data/1623-BS16.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-BS16</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-BS16</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>BS16</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-BS18.html b/cave_data/1623-BS18.html
index 7478cb92f..f963199da 100644
--- a/cave_data/1623-BS18.html
+++ b/cave_data/1623-BS18.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-BS18</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-BS18</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-BS19.html b/cave_data/1623-BS19.html
index d00ea30a8..87988c6a1 100644
--- a/cave_data/1623-BS19.html
+++ b/cave_data/1623-BS19.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-BS19</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-BS19</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-BS20.html b/cave_data/1623-BS20.html
index 68e6f0d2a..42764a420 100644
--- a/cave_data/1623-BS20.html
+++ b/cave_data/1623-BS20.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-BS20</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-BS20</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-LA26.html b/cave_data/1623-LA26.html
index 59ea7f36e..87ab073fd 100644
--- a/cave_data/1623-LA26.html
+++ b/cave_data/1623-LA26.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-LA26</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-LA26</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>LUSS/LA26</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>2/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-LA27.html b/cave_data/1623-LA27.html
index c9a26e727..5bc4ef916 100644
--- a/cave_data/1623-LA27.html
+++ b/cave_data/1623-LA27.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-LA27</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-LA27</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>LUSS/LA27</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/T +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-LA35.html b/cave_data/1623-LA35.html
index f30546a51..7a892b142 100644
--- a/cave_data/1623-LA35.html
+++ b/cave_data/1623-LA35.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-LA35</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-LA35</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>LUSS/LA35</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-LA37.html b/cave_data/1623-LA37.html
index b4d67740a..2528cc6f6 100644
--- a/cave_data/1623-LA37.html
+++ b/cave_data/1623-LA37.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-LA37</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-LA37</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>LUSS/LA37</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-LA38.html b/cave_data/1623-LA38.html
index 75d8dade3..a71364ba1 100644
--- a/cave_data/1623-LA38.html
+++ b/cave_data/1623-LA38.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-LA38</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-LA38</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>LUSS/LA38</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1623-LA40.html b/cave_data/1623-LA40.html
index e1816048a..cbe867ce4 100644
--- a/cave_data/1623-LA40.html
+++ b/cave_data/1623-LA40.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-LA40</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1623-LA40</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>LUSS/LA40</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code>1/E +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1624-1.html b/cave_data/1624-1.html
index f71694bd7..b7d3026ee 100644
--- a/cave_data/1624-1.html
+++ b/cave_data/1624-1.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1624-1</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1624-1</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Ohrhöhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1624</area><!-- e.g. "1623" -->
 <kataster_code>2/?</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1624-120.html b/cave_data/1624-120.html
index ee5e38c11..6d1a23911 100644
--- a/cave_data/1624-120.html
+++ b/cave_data/1624-120.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1624-120</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1624-120</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>HS-Nebenhöhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1624</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1624-122.html b/cave_data/1624-122.html
index 28b490fa3..7b5c057e1 100644
--- a/cave_data/1624-122.html
+++ b/cave_data/1624-122.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1624-122</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1624-122</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1624</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1624-138.html b/cave_data/1624-138.html
index 8476f0067..cd58fbbe3 100644
--- a/cave_data/1624-138.html
+++ b/cave_data/1624-138.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1624-138</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1624-138</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Unterhosenhöhle (pants)</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1624</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1624-162.html b/cave_data/1624-162.html
index a5d4a1b66..78780057b 100644
--- a/cave_data/1624-162.html
+++ b/cave_data/1624-162.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1624-162</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1624-162</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Osteologinnenhöhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1624</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1624-170.html b/cave_data/1624-170.html
index a5e949205..48bca50ca 100644
--- a/cave_data/1624-170.html
+++ b/cave_data/1624-170.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1624-170</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1624-170</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Dreiganghöhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1624</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1624-190.html b/cave_data/1624-190.html
index d64398956..daa4cefb3 100644
--- a/cave_data/1624-190.html
+++ b/cave_data/1624-190.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1624-190</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1624-190</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schweigende Höhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1624</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-10.html b/cave_data/1626-10.html
index eb53405b0..4e5bf960f 100644
--- a/cave_data/1626-10.html
+++ b/cave_data/1626-10.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-10</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-10</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Eisbodentichter</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-101.html b/cave_data/1626-101.html
index 7fc7d830c..5ab5a6493 100644
--- a/cave_data/1626-101.html
+++ b/cave_data/1626-101.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-101</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-101</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Mike-Luckwill-Schacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-102.html b/cave_data/1626-102.html
index d32c40c10..60f2dd959 100644
--- a/cave_data/1626-102.html
+++ b/cave_data/1626-102.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-102</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-102</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Kameradschaftshoehle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code>-</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-111.html b/cave_data/1626-111.html
index 1ffa53b4f..04b1d9a43 100644
--- a/cave_data/1626-111.html
+++ b/cave_data/1626-111.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-111</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-111</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Wehrkogelhoehle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code>-</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-117.html b/cave_data/1626-117.html
index c1038b249..65ab0683e 100644
--- a/cave_data/1626-117.html
+++ b/cave_data/1626-117.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-117</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-117</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Trunkemboldschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code>3/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-118.html b/cave_data/1626-118.html
index 49493462b..709e6cd1b 100644
--- a/cave_data/1626-118.html
+++ b/cave_data/1626-118.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-118</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-118</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Ottoloch H2</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-120.html b/cave_data/1626-120.html
index 8983d68e8..d8409dd19 100644
--- a/cave_data/1626-120.html
+++ b/cave_data/1626-120.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-120</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-120</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Feuertalsystem</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code>4/T/S x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-122.html b/cave_data/1626-122.html
index a07212271..820c84e8e 100644
--- a/cave_data/1626-122.html
+++ b/cave_data/1626-122.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-122</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-122</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Ufoschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code>3/S =</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-13.html b/cave_data/1626-13.html
index 6ce72f738..01cd2192f 100644
--- a/cave_data/1626-13.html
+++ b/cave_data/1626-13.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-13</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-13</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Fliegenschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-154.html b/cave_data/1626-154.html
index 35f0b79e8..1965016ea 100644
--- a/cave_data/1626-154.html
+++ b/cave_data/1626-154.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-154</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-154</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Flaschenschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-155.html b/cave_data/1626-155.html
index 2d9b6709c..5afdd1e95 100644
--- a/cave_data/1626-155.html
+++ b/cave_data/1626-155.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-155</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-155</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schneekirchl</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-16.html b/cave_data/1626-16.html
index b98fa5b5e..ebb8698d4 100644
--- a/cave_data/1626-16.html
+++ b/cave_data/1626-16.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-16</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-16</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-187.html b/cave_data/1626-187.html
index 27d9fa43f..9a9ab296d 100644
--- a/cave_data/1626-187.html
+++ b/cave_data/1626-187.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-187</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-187</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Christbaumloch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2.html b/cave_data/1626-2.html
index 7f72aade2..c252ddc11 100644
--- a/cave_data/1626-2.html
+++ b/cave_data/1626-2.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Kein-Problem-Schacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-AD-02.html b/cave_data/1626-2018-AD-02.html
index c2a078fe2..ac573a0d0 100644
--- a/cave_data/1626-2018-AD-02.html
+++ b/cave_data/1626-2018-AD-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-AD-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-AD-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Garlic Cave</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-DM-01.html b/cave_data/1626-2018-DM-01.html
index a74fc1ae1..f7d8c77d7 100644
--- a/cave_data/1626-2018-DM-01.html
+++ b/cave_data/1626-2018-DM-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-DM-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-DM-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-DM-02.html b/cave_data/1626-2018-DM-02.html
index b8af7de5b..f4a8ee450 100644
--- a/cave_data/1626-2018-DM-02.html
+++ b/cave_data/1626-2018-DM-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-DM-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-DM-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-DM-03.html b/cave_data/1626-2018-DM-03.html
index 07bf75c35..1dc9208af 100644
--- a/cave_data/1626-2018-DM-03.html
+++ b/cave_data/1626-2018-DM-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-DM-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-DM-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-DM-04.html b/cave_data/1626-2018-DM-04.html
index 8601b6249..fe8bedce2 100644
--- a/cave_data/1626-2018-DM-04.html
+++ b/cave_data/1626-2018-DM-04.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-DM-04</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-DM-04</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Bunderstruck Höhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-DM-05.html b/cave_data/1626-2018-DM-05.html
index ec1b2ad5a..e86343bd2 100644
--- a/cave_data/1626-2018-DM-05.html
+++ b/cave_data/1626-2018-DM-05.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-DM-05</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-DM-05</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-DM-06.html b/cave_data/1626-2018-DM-06.html
index 35cc0ae96..52e81a164 100644
--- a/cave_data/1626-2018-DM-06.html
+++ b/cave_data/1626-2018-DM-06.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-DM-06</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-DM-06</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-ms-02.html b/cave_data/1626-2018-ms-02.html
index 8004c0dad..594447fed 100644
--- a/cave_data/1626-2018-ms-02.html
+++ b/cave_data/1626-2018-ms-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-ms-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-ms-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Blitz Baum Schacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-ms-03.html b/cave_data/1626-2018-ms-03.html
index 45313996e..5e0c24efe 100644
--- a/cave_data/1626-2018-ms-03.html
+++ b/cave_data/1626-2018-ms-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-ms-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-ms-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-ms-04.html b/cave_data/1626-2018-ms-04.html
index f4456d8a7..6bce4cf81 100644
--- a/cave_data/1626-2018-ms-04.html
+++ b/cave_data/1626-2018-ms-04.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-ms-04</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-ms-04</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Zufall h&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-pw-01.html b/cave_data/1626-2018-pw-01.html
index 4f01617c6..db0fe31e8 100644
--- a/cave_data/1626-2018-pw-01.html
+++ b/cave_data/1626-2018-pw-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-pw-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-pw-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Trois Dents</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-pw-02.html b/cave_data/1626-2018-pw-02.html
index 19f8b657c..a359477e0 100644
--- a/cave_data/1626-2018-pw-02.html
+++ b/cave_data/1626-2018-pw-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-pw-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-pw-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-pw-03.html b/cave_data/1626-2018-pw-03.html
index 2728437d2..a82934ad9 100644
--- a/cave_data/1626-2018-pw-03.html
+++ b/cave_data/1626-2018-pw-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-pw-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-pw-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>VMKBAH höhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-tk-01.html b/cave_data/1626-2018-tk-01.html
index 96d6581c2..e02816685 100644
--- a/cave_data/1626-2018-tk-01.html
+++ b/cave_data/1626-2018-tk-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-tk-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-tk-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2018-tk-02.html b/cave_data/1626-2018-tk-02.html
index 8de1da744..e80a4f752 100644
--- a/cave_data/1626-2018-tk-02.html
+++ b/cave_data/1626-2018-tk-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2018-tk-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2018-tk-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2019-HT-01.html b/cave_data/1626-2019-HT-01.html
index 52b8041a1..11430b056 100644
--- a/cave_data/1626-2019-HT-01.html
+++ b/cave_data/1626-2019-HT-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2019-HT-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2019-HT-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Das Bananenloch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2019-HT-02.html b/cave_data/1626-2019-HT-02.html
index 441e040ef..557c5a918 100644
--- a/cave_data/1626-2019-HT-02.html
+++ b/cave_data/1626-2019-HT-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2019-HT-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2019-HT-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Boop-Boo-Da-Boop-Da-Boop</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2019-rh-01.html b/cave_data/1626-2019-rh-01.html
index 9e3453687..885460639 100644
--- a/cave_data/1626-2019-rh-01.html
+++ b/cave_data/1626-2019-rh-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2019-rh-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2019-rh-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2019-rh-02.html b/cave_data/1626-2019-rh-02.html
index 9aca4fbb6..dbbc05eb6 100644
--- a/cave_data/1626-2019-rh-02.html
+++ b/cave_data/1626-2019-rh-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2019-rh-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2019-rh-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-202.html b/cave_data/1626-202.html
index c9e7d9739..9beda2b38 100644
--- a/cave_data/1626-202.html
+++ b/cave_data/1626-202.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-202</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-202</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Ab_in_den_Sueden</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2023-BL-01.html b/cave_data/1626-2023-BL-01.html
index 07d47866a..ad26a29ec 100644
--- a/cave_data/1626-2023-BL-01.html
+++ b/cave_data/1626-2023-BL-01.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2023-BL-01</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2023-BL-01</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2023-BL-02.html b/cave_data/1626-2023-BL-02.html
index bdfba5d4a..cc86bdbe8 100644
--- a/cave_data/1626-2023-BL-02.html
+++ b/cave_data/1626-2023-BL-02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2023-BL-02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2023-BL-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2023-BL-03.html b/cave_data/1626-2023-BL-03.html
index 3d2c16efc..c6363277c 100644
--- a/cave_data/1626-2023-BL-03.html
+++ b/cave_data/1626-2023-BL-03.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2023-BL-03</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2023-BL-03</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2023-BL-04.html b/cave_data/1626-2023-BL-04.html
index 07f6cf2c4..c7c7cb041 100644
--- a/cave_data/1626-2023-BL-04.html
+++ b/cave_data/1626-2023-BL-04.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2023-BL-04</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2023-BL-04</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Boulder block cave</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2023-BL-05.html b/cave_data/1626-2023-BL-05.html
index 1b9be4151..1d384e5b5 100644
--- a/cave_data/1626-2023-BL-05.html
+++ b/cave_data/1626-2023-BL-05.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2023-BL-05</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2023-BL-05</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2023-BL-06.html b/cave_data/1626-2023-BL-06.html
index eac87abe5..3a708cfab 100644
--- a/cave_data/1626-2023-BL-06.html
+++ b/cave_data/1626-2023-BL-06.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2023-BL-06</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2023-BL-06</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2023-BL-07.html b/cave_data/1626-2023-BL-07.html
index 4f9cb12b9..b2eda722f 100644
--- a/cave_data/1626-2023-BL-07.html
+++ b/cave_data/1626-2023-BL-07.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2023-BL-07</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2023-BL-07</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-2023-BL-09.html b/cave_data/1626-2023-BL-09.html
index 5c91dfdae..464409ec2 100644
--- a/cave_data/1626-2023-BL-09.html
+++ b/cave_data/1626-2023-BL-09.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-2023-BL-09</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-2023-BL-09</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-203.html b/cave_data/1626-203.html
index 16357a9fe..1da87b365 100644
--- a/cave_data/1626-203.html
+++ b/cave_data/1626-203.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-203</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-203</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Wildkar-Hoehle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-205.html b/cave_data/1626-205.html
index 218a87708..05157da52 100644
--- a/cave_data/1626-205.html
+++ b/cave_data/1626-205.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-205</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-205</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-207.html b/cave_data/1626-207.html
index 64c398c25..62ac29ea9 100644
--- a/cave_data/1626-207.html
+++ b/cave_data/1626-207.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-207</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-207</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-257.html b/cave_data/1626-257.html
index 5fd623d6e..b47f6d7de 100644
--- a/cave_data/1626-257.html
+++ b/cave_data/1626-257.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-257</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-257</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Einstiegsschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-27.html b/cave_data/1626-27.html
index 79ef95514..27d698901 100644
--- a/cave_data/1626-27.html
+++ b/cave_data/1626-27.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-27</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-27</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-29.html b/cave_data/1626-29.html
index 19385bc0e..68db05bf5 100644
--- a/cave_data/1626-29.html
+++ b/cave_data/1626-29.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-29</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-29</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Sonnscheinhoehle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-3.html b/cave_data/1626-3.html
index 9af7f1539..2438be734 100644
--- a/cave_data/1626-3.html
+++ b/cave_data/1626-3.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-3</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-3</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Toti-Eisloch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-33.html b/cave_data/1626-33.html
index 2eac161b0..e70816185 100644
--- a/cave_data/1626-33.html
+++ b/cave_data/1626-33.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-33</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-33</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Horizontalteil</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-354.html b/cave_data/1626-354.html
index c9a5e3599..47a91f9c2 100644
--- a/cave_data/1626-354.html
+++ b/cave_data/1626-354.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-354</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-354</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>LangGustl</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-361.html b/cave_data/1626-361.html
index 78d2bdd5f..172139a2f 100644
--- a/cave_data/1626-361.html
+++ b/cave_data/1626-361.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-361</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-361</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Hübel-Höhle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-40.html b/cave_data/1626-40.html
index 5eeafe54c..da3241235 100644
--- a/cave_data/1626-40.html
+++ b/cave_data/1626-40.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-40</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-40</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Fritzlhoehle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-46.html b/cave_data/1626-46.html
index 72e4897f3..5a6bd50af 100644
--- a/cave_data/1626-46.html
+++ b/cave_data/1626-46.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-46</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-46</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Neue_Plagitzerhoehle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-49.html b/cave_data/1626-49.html
index 387ceb247..5e651cbdc 100644
--- a/cave_data/1626-49.html
+++ b/cave_data/1626-49.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-49</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-49</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Felsbogenhoehle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-5.html b/cave_data/1626-5.html
index 9aa2abd6c..bdd5514e4 100644
--- a/cave_data/1626-5.html
+++ b/cave_data/1626-5.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-5</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-5</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Nagelstegh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code>2/W +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-50.html b/cave_data/1626-50.html
index 68caffbf0..ce3f43c6a 100644
--- a/cave_data/1626-50.html
+++ b/cave_data/1626-50.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-50</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-50</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Ahnenschacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code>3/S/T</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-52.html b/cave_data/1626-52.html
index d53e3490c..c0ea69801 100644
--- a/cave_data/1626-52.html
+++ b/cave_data/1626-52.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-52</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-52</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Grushoehle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code>-</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-55.html b/cave_data/1626-55.html
index 3f9323f3d..ce63c2010 100644
--- a/cave_data/1626-55.html
+++ b/cave_data/1626-55.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>True</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-55</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-55</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Raucherkarh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code>4/T/S/E x</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-7.html b/cave_data/1626-7.html
index 99952f415..e9cb7bdac 100644
--- a/cave_data/1626-7.html
+++ b/cave_data/1626-7.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-7</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-7</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Mittereckhoehle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-71.html b/cave_data/1626-71.html
index 112ea08ea..de8e381b3 100644
--- a/cave_data/1626-71.html
+++ b/cave_data/1626-71.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-71</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-71</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Zick-Zack-Schacht</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-8.html b/cave_data/1626-8.html
index 8f1dba7ae..cff31ba16 100644
--- a/cave_data/1626-8.html
+++ b/cave_data/1626-8.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-8</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-8</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-9.html b/cave_data/1626-9.html
index 7c1d83dba..c94fecee1 100644
--- a/cave_data/1626-9.html
+++ b/cave_data/1626-9.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-9</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-9</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-E02.html b/cave_data/1626-E02.html
index 0fcaedff6..a7f1d2faa 100644
--- a/cave_data/1626-E02.html
+++ b/cave_data/1626-E02.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-E02</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-E02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Fliffies (E09?)</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-E09.html b/cave_data/1626-E09.html
index d26d237d8..6df9698cc 100644
--- a/cave_data/1626-E09.html
+++ b/cave_data/1626-E09.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-E09</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-E09</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Roehre Höhle (E09)</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-E16.html b/cave_data/1626-E16.html
index 32b258403..22bb78110 100644
--- a/cave_data/1626-E16.html
+++ b/cave_data/1626-E16.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-E16</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-E16</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Ich muss mal (Die Mausefalle)</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-E28.html b/cave_data/1626-E28.html
index db1f411e2..f6f266b5c 100644
--- a/cave_data/1626-E28.html
+++ b/cave_data/1626-E28.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-E28</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-E28</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Alladin mit der Wunderlampe</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-LA11.html b/cave_data/1626-LA11.html
index cad020b0d..a3c195ad3 100644
--- a/cave_data/1626-LA11.html
+++ b/cave_data/1626-LA11.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-LA11</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-LA11</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Lungeh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code>2/S +</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1626-LA12.html b/cave_data/1626-LA12.html
index 983506e7c..310dbfe3c 100644
--- a/cave_data/1626-LA12.html
+++ b/cave_data/1626-LA12.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1626-LA12</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1626-LA12</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Sternloch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1626</area><!-- e.g. "1623" -->
 <kataster_code>3/S -</kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1627-702.html b/cave_data/1627-702.html
index 3712ef372..5113d66e8 100644
--- a/cave_data/1627-702.html
+++ b/cave_data/1627-702.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1627-702</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1627-702</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Eisrohrschach</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1627</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1627-703.html b/cave_data/1627-703.html
index a70a147f7..bce242c73 100644
--- a/cave_data/1627-703.html
+++ b/cave_data/1627-703.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1627-703</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1627-703</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Al herrenh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1627</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1627-706.html b/cave_data/1627-706.html
index 2f1430775..76cd6c5d7 100644
--- a/cave_data/1627-706.html
+++ b/cave_data/1627-706.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1627-706</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1627-706</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Unaussprechliche</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1627</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1627-729.html b/cave_data/1627-729.html
index 3f7503e1a..d163c495a 100644
--- a/cave_data/1627-729.html
+++ b/cave_data/1627-729.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1627-729</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1627-729</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Lehmlabyrinth</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1627</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1627-734.html b/cave_data/1627-734.html
index 901e1b130..0e9509967 100644
--- a/cave_data/1627-734.html
+++ b/cave_data/1627-734.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1627-734</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1627-734</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Megalodon</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1627</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1627-736.html b/cave_data/1627-736.html
index e8079d81a..e99f56826 100644
--- a/cave_data/1627-736.html
+++ b/cave_data/1627-736.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1627-736</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1627-736</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Aussprechliche H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1627</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1627-737.html b/cave_data/1627-737.html
index b24eefba4..64c7e07c1 100644
--- a/cave_data/1627-737.html
+++ b/cave_data/1627-737.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1627-737</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1627-737</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Kraddlerloch</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1627</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1627-738.html b/cave_data/1627-738.html
index 7ed5b416b..dab5cd8e7 100644
--- a/cave_data/1627-738.html
+++ b/cave_data/1627-738.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1627-738</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1627-738</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Q-Blumenschach</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1627</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1627-739.html b/cave_data/1627-739.html
index 6b19d01b3..ecd62bc6c 100644
--- a/cave_data/1627-739.html
+++ b/cave_data/1627-739.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1627-739</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1627-739</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Glashaus</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1627</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1627-742.html b/cave_data/1627-742.html
index bd736c745..a124f8fef 100644
--- a/cave_data/1627-742.html
+++ b/cave_data/1627-742.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1627-742</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1627-742</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Illegaler Harem</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1627</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1627-796.html b/cave_data/1627-796.html
index 4681359d3..99c1c8fd6 100644
--- a/cave_data/1627-796.html
+++ b/cave_data/1627-796.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1627-796</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1627-796</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Schaumal-Bärenh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1627</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
diff --git a/cave_data/1627-798.html b/cave_data/1627-798.html
index f607b25c0..08cddf4cf 100644
--- a/cave_data/1627-798.html
+++ b/cave_data/1627-798.html
@@ -17,7 +17,7 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1627-798</caveslug><!--(Ignored). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
+<caveslug>1627-798</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name></official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1627</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'