--- a/misc/migration/3.14.4_Any.py	Wed Apr 11 09:40:11 2012 +0200
+++ b/misc/migration/3.14.4_Any.py	Mon Apr 23 18:01:30 2012 +0200
@@ -5,6 +5,7 @@
 attrtype = y2sql.type_from_constraints(dbhelper, rdefdef.object, rdefdef.constraints).split()[0]
 
 cursor = session.cnxset['system']
+rql('UPDATE entities SET asource = source WHERE asource is NULL')
 dbhelper.change_col_type(cursor, 'entities', 'asource', attrtype, False)
 dbhelper.change_col_type(cursor, 'entities', 'source', attrtype, False)
 dbhelper.change_col_type(cursor, 'deleted_entities', 'source', attrtype, False)