diff --git a/openerp/tools/convert.py b/openerp/tools/convert.py
index 5536f311eb8..dd3a3d4a285 100644
--- a/openerp/tools/convert.py
+++ b/openerp/tools/convert.py
@@ -301,13 +301,11 @@ form: module.record_id""" % (xml_id,)
                 pass
         if ids:
             self.pool.get(d_model).unlink(cr, self.uid, ids)
-            self.pool.get('ir.model.data')._unlink(cr, self.uid, d_model, ids)
 
     def _remove_ir_values(self, cr, name, value, model):
         ir_value_ids = self.pool.get('ir.values').search(cr, self.uid, [('name','=',name),('value','=',value),('model','=',model)])
         if ir_value_ids:
             self.pool.get('ir.values').unlink(cr, self.uid, ir_value_ids)
-            self.pool.get('ir.model.data')._unlink(cr, self.uid, 'ir.values', ir_value_ids)
 
         return True