--- a/server/migractions.py	Mon Oct 10 16:15:55 2011 +0200
+++ b/server/migractions.py	Tue Oct 11 11:00:24 2011 +0200
@@ -1553,7 +1553,7 @@
         """
         rschema = self.repo.schema.rschema(attr)
         oldtype = rschema.objects(etype)[0]
-        rdefeid = rschema.rproperty(etype, oldtype, 'eid')
+        rdefeid = rschema.rdef(etype, oldtype).eid
         sql = ("UPDATE cw_CWAttribute "
                "SET cw_to_entity=(SELECT cw_eid FROM cw_CWEType WHERE cw_name='%s')"
                "WHERE cw_eid=%s") % (newtype, rdefeid)