diff --git a/src/main/resources/db/migration/V4.11.1__5565-sanitize-directory-labels.sql b/src/main/resources/db/migration/V4.11.0.1__5565-sanitize-directory-labels.sql
similarity index 59%
rename from src/main/resources/db/migration/V4.11.1__5565-sanitize-directory-labels.sql
rename to src/main/resources/db/migration/V4.11.0.1__5565-sanitize-directory-labels.sql
index ac54f965804..3d3ed777c9f 100644
--- a/src/main/resources/db/migration/V4.11.1__5565-sanitize-directory-labels.sql
+++ b/src/main/resources/db/migration/V4.11.0.1__5565-sanitize-directory-labels.sql
@@ -1,11 +1,9 @@
 -- replace any sequences of slashes and backslashes with a single slash:
 UPDATE filemetadata SET directoryLabel = regexp_replace(directoryLabel, '[/\\][/\\]+', '/', 'g');
--- replace any ampersands with ' and ':
-UPDATE filemetadata SET directoryLabel = regexp_replace(directoryLabel, '&', ' and ', 'g');
--- strip (and replace with a whitespace) any characters that are no longer allowed in the directory labels:
-UPDATE filemetadata SET directoryLabel = regexp_replace(directoryLabel, '[^A-Za-z0-9_ ./-]+', ' ', 'g');
--- now replace any sequences of whitespaces with a single white space:
-UPDATE filemetadata SET directoryLabel = regexp_replace(directoryLabel, '  +', ' ', 'g');
+-- strip (and replace with a .) any characters that are no longer allowed in the directory labels:
+UPDATE filemetadata SET directoryLabel = regexp_replace(directoryLabel, '\.\.+', '.', 'g');
+-- now replace any sequences of .s with a single .:
+UPDATE filemetadata SET directoryLabel = regexp_replace(directoryLabel, '\.\.+', '.', 'g');
 -- get rid of any leading or trailing slashes, spaces, '-'s and '.'s: 
 UPDATE filemetadata SET directoryLabel = regexp_replace(directoryLabel, '^[/ .\-]+', '', '');
 UPDATE filemetadata SET directoryLabel = regexp_replace(directoryLabel, '[/ \.\-]+$', '', '');