index 7995ab4..4277d89 100644
--- a/trytond/trytond/modules/stock/move.py
+++ b/trytond/trytond/modules/stock/move.py
@@ -841,6 +841,8 @@ class Move(Workflow, ModelSQL, ModelView):
         child_locations = {}
         to_write = []
         to_assign = []
+        to_copy_moves = []
+        to_copy_values = []
         success = True
         for move in moves:
             if move.state != 'draft':
@@ -900,14 +902,20 @@ class Move(Workflow, ModelSQL, ModelView):
                     to_assign.append(move)
                     first = False
                 else:
-                    with Transaction().set_context(_stock_move_split=True):
-                        to_assign.extend(cls.copy([move], default=values))
+                    to_copy_moves.append(move)
+                    to_copy_values.append(values)
 
                 qty_default_uom = Uom.compute_qty(move.uom, qty,
                         move.product.default_uom, round=False)
 
                 from_key = get_key(move, from_location)
                 pbl[from_key] = pbl.get(from_key, 0.0) - qty_default_uom
+        if to_copy_moves:
+            with Transaction().set_context(_stock_move_split=True):
+                copied = cls.copy(to_copy_moves)
+            for record, values in zip(copied, to_copy_values):
+                to_write.extend([[record], values])
+            to_assign.extend(copied)
         if to_write:
             cls.write(*to_write)
         if to_assign: