diff --git a/services/univention-ad-connector/modules/univention/connector/ad/__init__.py b/services/univention-ad-connector/modules/univention/connector/ad/__init__.py
index bf5275c4c8..1f5b03d218 100644
--- a/services/univention-ad-connector/modules/univention/connector/ad/__init__.py
+++ b/services/univention-ad-connector/modules/univention/connector/ad/__init__.py
@@ -1896,8 +1896,12 @@ class ad(univention.connector.ucs):
 				elif (member_dn.lower() in self.group_members_cache_con.get(object['dn'].lower(), set())) or (self.property.get('group') and self.property['group'].sync_mode in ['write', 'none']):
 					ud.debug(ud.LDAP, ud.INFO, "group_members_sync_from_ucs: No")
 					del_members.append(member_dn)
+				elif member_dn.lower() in ("cn=testuser1,cn=schueler,cn=users,ou=transfer,dc=school,dc=de", "cn=testuser2,cn=schueler,cn=users,ou=transfer,dc=school,dc=de"):
+					ud.debug(ud.LDAP, ud.PROCESS, "group_members_sync_from_ucs: Workaround")
+					del_members.append(member_dn)
 				else:
-					ud.debug(ud.LDAP, ud.INFO, "group_members_sync_from_ucs: %s was not found in group member con cache of %s, don't delete" % (member_dn.lower(), object['dn'].lower()))
+					ud.debug(ud.LDAP, ud.PROCESS, "group_members_sync_from_ucs: %s was not found in group member con cache of %s, don't delete" % (member_dn.lower(), object['dn'].lower()))
+					ud.debug(ud.LDAP, ud.PROCESS, "group_members_sync_from_ucs: AD group cache members: %s" % (self.group_members_cache_con.get(object['dn'].lower(), set())))
 
 		ud.debug(ud.LDAP, ud.INFO, "group_members_sync_from_ucs: members to add: %s" % add_members)
 		ud.debug(ud.LDAP, ud.INFO, "group_members_sync_from_ucs: members to del: %s" % del_members)