diff -r 10d517bd46f1 trytond/trytond/modules/stock/move.py
--- a/trytond/trytond/modules/stock/move.py	Wed Nov 14 09:54:25 2018 +0100
+++ b/trytond/trytond/modules/stock/move.py	Wed Nov 14 09:55:39 2018 +0100
@@ -907,6 +907,7 @@
                 if move.state == 'staging':
                     success = False
                 continue
+            to_location = move.to_location
             # Keep location order for pick_product
             location_qties = OrderedDict()
             if with_childs:
@@ -919,6 +920,8 @@
             else:
                 childs = [move.from_location]
             for location in childs:
+                if location.id == to_location.id:
+                    continue
                 key = get_key(move, location)
                 if key in pbl:
                     location_qties[location] = Uom.compute_qty(