--- modules/univention/s4connector/__init__.py	(Revision 66290)
+++ modules/univention/s4connector/__init__.py	(Arbeitskopie)
@@ -1448,7 +1448,6 @@ 
 						result = True
 					else:
 						result = self.delete_in_ucs(property_type, object, module, position)
-					self._remove_dn_mapping(object['dn'], premapped_s4_dn)
 					self.s4cache.remove_entry(guid)
 				if object['modtype'] == 'move':
 					result = self.move_in_ucs(property_type, object, module, position)