diff --git a/cave_data/1623-264.html b/cave_data/1623-264.html
index 2e20bf03e..570da64ac 100644
--- a/cave_data/1623-264.html
+++ b/cave_data/1623-264.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<!-- This file is generated by troggle on June 5, 2023, 3:37 p.m. UTC using the form documented at /handbook/survey/caveentry.html -->
+<!-- This file is generated by troggle on June 5, 2023, 3:44 p.m. UTC using the form documented at /handbook/survey/caveentry.html -->
 <!-- Only put one cave in this file -->
 <!-- If you edit this 1623-nnn.html file by hand, and manually upload it to the server using git,
 make sure you update the database by doing a full data import. If you edit it using the online form
@@ -10,7 +10,7 @@ though, you do not need to do a data import as it happens automatically -->
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
 </head>
 <body>
-<b>This file is generated by troggle</b> on June 5, 2023, 3:37 p.m. UTC using the form documented at
+<b>This file is generated by troggle</b> on June 5, 2023, 3:44 p.m. UTC using the form documented at
 the form documented at 
 <a href="/handbook/survey/caveentry.html">handbook/survey/caveentry.html</a>
 <br>
@@ -20,7 +20,7 @@ the form documented at
 <caveslug>1623-264</caveslug><!--(Required). Internal I.D. used to refer to this cave in entrance data files. Typically the same as the filebase, e.g. '1623-195'  -->
 <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>1/S =</kataster_code><!-- 'length-or-depth/type exploration'
+<kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
 code used in the Austrian kataster e.g '1/S +' - https://expo/.survex.com/katast.htm
 
     T   Trockenh&ouml;hlen (Dry caves)
@@ -43,7 +43,7 @@ code used in the Austrian kataster e.g '1/S +' - https://expo/.survex.com/katast
   <letter></letter><!--Leave blank for single-entrance cave. If there is more than one entrace then the letter needs to be given. Generally matches the entranceslug ID.  -->
 </entrance>
 
-<explorers>Entrance noted CUCC 2002 (Duncan). Refound + partially explored CUCC 2005 (Peter + Phil). Explored to ~3km in 2014 with exploration continuing since then</explorers><!-- 'CUCC Expo' and year(s) of exploration. To distinguish from caves explored by foreign groups. Individual names can be given too if it was a small cave. -->
+<explorers></explorers><!-- 'CUCC Expo' and year(s) of exploration. To distinguish from caves explored by foreign groups. Individual names can be given too if it was a small cave. -->
 <survex_file>caves-1623/264/264.svx</survex_file><!-- Name of top-level survey file for this cave. Relative to the 'loser' survex repository. So for most caves that's "caves/cavenum/cavnum.svx". (e.g. caves/204/204.svx -->
 <underground_description><p><b>WARNING: Entrance pitch floods dangerously in wet weather</b> - wait at the bottom until it is safe to ascend. A bivvy bag, food and a brew kit should be left at the bottom of the entrance pitch!</p>
 
@@ -163,7 +163,7 @@ passage. (<em>The first R leads to <strong>Chasm Passage</strong> and a pitch he
 
 <p> See survey section below for links to surveys </p></underground_description><!-- Underground description. (description of approach and entrance goes in entrance file). For a small cave this will be the entire description. For larger caves it will be the front page of the description, or a short intro, containing links to other pages with the cave description in, or even nothing but a link. -->
 <equipment></equipment><!-- For a small cave, summary of gear needed to descend. For longer caves it could be blank, a table, or just refer to the description/topos. Leave blank if this info is in the description. -->
-<references>Brief description and sketch in 2002#31; <a href="../../years/2005/logbook.html#t2005-08-10A">2005 log book</a>.</references><!-- References to documentation. Could be Journal articles or Logbook entries. Can be links if the docs are online. -->
+<references></references><!-- References to documentation. Could be Journal articles or Logbook entries. Can be links if the docs are online. -->
 <survey><ul>
   
 <li>
@@ -187,7 +187,7 @@ passage. (<em>The first R leads to <strong>Chasm Passage</strong> and a pitch he
 <kataster_status></kataster_status>
 <underground_centre_line></underground_centre_line><!-- 'In dataset' if it is in the survex dataset. Blank if not, or notes about status such as 'surveyed, but no entrance fix so not yet in dataset'. -->
 <notes>The original ID 2005-05 was also used (briefly) for another entrance, which was found the next day to connect to 204, and designated as 204G. The number was reused due to an acute tag shortage.</notes><!-- Normally empty, but place for anything else that should be noted, such as info on cave maybe being a duplicate, or lost -->
-<length>3.1km</length><!-- Cave length. Can be left blank and system should fill it in automatically from survey data (it doesn't yet) -->
+<length></length><!-- Cave length. Can be left blank and system should fill it in automatically from survey data (it doesn't yet) -->
 <depth></depth><!--Cave depth. Can be left blank and system should fill it in automatically from survey data (it doesn't yet)  -->
 <extent></extent>
 
