Copy invoice lines when synchronizing shipment moves

issue9114
review273011002

__init__.py

@@ -11,4 +11,5 @@ def register():
         account.InvoiceLineStockMove,
         account.InvoiceLine,
         stock.Move,
+        stock.ShipmentOut,
         module='account_invoice_stock', type_='model')

stock.py

@@ -62,3 +62,13 @@ class Move(metaclass=PoolMeta):
         if not Transaction().context.get('_stock_move_split'):
             default.setdefault('invoice_lines', None)
         return super().copy(moves, default=default)
+
+
+class ShipmentOut(metaclass=PoolMeta):
+    __name__ = 'stock.shipment.out'
+
+    def _sync_outgoing_move(self, template=None):
+        move = super()._sync_outgoing_move(template=template)
+        if template and template.invoice_lines:
+            move.invoice_lines = list(template.invoice_lines)
+        return move