--- a/management/univention-management-console-module-udm/umc/python/udm/__init__.py	
+++ a/management/univention-management-console-module-udm/umc/python/udm/__init__.py	
@@ -465,6 +465,9 @@ def _thread(request):
 				else:
 					obj = module.get(ldap_dn)
 					if obj:
+						for name, p in obj.descriptions.items():
+							if obj.has_key(name) and obj.descriptions[name].default(obj):
+								obj[name]  # __getitem__ sets default value
 						props = obj.info
 						for passwd in module.password_properties:
 							if passwd in props: