diff --git a/entrance_data/1623-2023-mg-03.html b/entrance_data/1623-2023-mg-03c.html
similarity index 97%
rename from entrance_data/1623-2023-mg-03.html
rename to entrance_data/1623-2023-mg-03c.html
index 8ebda8f2d..562a25873 100644
--- a/entrance_data/1623-2023-mg-03.html
+++ b/entrance_data/1623-2023-mg-03c.html
@@ -19,7 +19,7 @@ though, you do not need to do a data import as it happens automatically -->
 <br>
 <entrance>
 <non_public>False</non_public>
-<slug>1623-2023-mg-03C</slug> <!-- one entrance and one slug per entrance_data file -->
+<slug>1623-2023-mg-03c</slug> <!-- one entrance and one slug per entrance_data file -->
 <name>c</name>
 <entrance_description></entrance_description>
 <explorers></explorers>
diff --git a/entrance_data/1623-296.html b/entrance_data/1623-296a.html
similarity index 97%
rename from entrance_data/1623-296.html
rename to entrance_data/1623-296a.html
index 00550fc02..e33193bb2 100644
--- a/entrance_data/1623-296.html
+++ b/entrance_data/1623-296a.html
@@ -19,7 +19,7 @@ though, you do not need to do a data import as it happens automatically -->
 <br>
 <entrance>
 <non_public>False</non_public>
-<slug>1623-296</slug> <!-- one entrance and one slug per entrance_data file -->
+<slug>1623-296a</slug> <!-- one entrance and one slug per entrance_data file -->
 <name></name>
 <entrance_description></entrance_description>
 <explorers></explorers>
diff --git a/entrance_data/1626-2023-BL-04.html b/entrance_data/1626-2023-BL-04a.html
similarity index 97%
rename from entrance_data/1626-2023-BL-04.html
rename to entrance_data/1626-2023-BL-04a.html
index 87bceeb0c..a8daf2403 100644
--- a/entrance_data/1626-2023-BL-04.html
+++ b/entrance_data/1626-2023-BL-04a.html
@@ -19,7 +19,7 @@ though, you do not need to do a data import as it happens automatically -->
 <br>
 <entrance>
 <non_public>False</non_public>
-<slug>1626-2023-BL-04</slug> <!-- one entrance and one slug per entrance_data file -->
+<slug>1626-2023-BL-04a</slug> <!-- one entrance and one slug per entrance_data file -->
 <name>Boulder Block Cave - shaft entrance to NW</name>
 <entrance_description></entrance_description>
 <explorers>Becka Lawson</explorers>
diff --git a/entrance_data/1626-2023-BL-04B.html b/entrance_data/1626-2023-BL-04b.html
similarity index 97%
rename from entrance_data/1626-2023-BL-04B.html
rename to entrance_data/1626-2023-BL-04b.html
index 5647c37d3..95a371470 100644
--- a/entrance_data/1626-2023-BL-04B.html
+++ b/entrance_data/1626-2023-BL-04b.html
@@ -19,7 +19,7 @@ though, you do not need to do a data import as it happens automatically -->
 <br>
 <entrance>
 <non_public>False</non_public>
-<slug>1626-2023-BL-04B</slug> <!-- one entrance and one slug per entrance_data file -->
+<slug>1626-2023-BL-04b</slug> <!-- one entrance and one slug per entrance_data file -->
 <name></name>
 <entrance_description></entrance_description>
 <explorers></explorers>