From b59849f7d1ee83d65fb635daed2d72aaada683f6 Mon Sep 17 00:00:00 2001
From: Electrans <electrans@nan-tic.com>
Date: Wed, 22 Nov 2017 11:20:34 +0100
Subject: [PATCH] Original readonly state for lot field in move should be
 extended, not replaced.

---
 stock.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stock.py b/stock.py
index cb62c4b..ad063d8 100644
--- a/stock.py
+++ b/stock.py
@@ -32,4 +32,4 @@ class Move():
 
         if 'product' not in cls.lot.depends:
             cls.lot.depends.append('product')
-        cls.lot.states['readonly'] = ~Eval('product') | ~Eval('from_location')
+        cls.lot.states['readonly'] |= ~Eval('product') | ~Eval('from_location')