**Impacted versions:** 8.0

**Steps to reproduce:**
To reproduce it is necessary the fifo configuration in the assignation of quants in moves.

- Create a sale order with two lines of the same product, one of that line with a route that generate moves between warehouse.

<img width="1231" alt="skitch 65" src="https://cloud.githubusercontent.com/assets/11341058/24102907/d575a638-0d53-11e7-922e-a3f034d43e94.png">

The route used has three pull rules:

1. From Stock Warehouse_1 to Virtual Locations/Inter Company Transit
2. From Virtual Locations/Inter Company Transit to Stock Warehouse_2
3. From Stock Warehouse_2 to Customers

<img width="1224" alt="skitch 66" src="https://cloud.githubusercontent.com/assets/11341058/24103147/b7c2bfbc-0d54-11e7-955c-87247a10e0bd.png">

- Confirm the sale order. It must be created three pickings:

<img width="1226" alt="skitch 67" src="https://cloud.githubusercontent.com/assets/11341058/24103498/d90c9b38-0d55-11e7-97ff-f986df8cdd9b.png">

- Transfer first two pickings.

<img width="1230" alt="skitch 70" src="https://cloud.githubusercontent.com/assets/11341058/24104496/b7b0be8a-0d58-11e7-89a2-4331fceec1d8.png">

- Before transfer third picking, review that one move has reserved the quant correctly because was reserved from the previous pickings.

<img width="1215" alt="skitch 68" src="https://cloud.githubusercontent.com/assets/11341058/24103908/23952cc8-0d57-11e7-9346-bd48d7edb54a.png">

**Current behavior:**

When check availability of this third picking, the quant already reserved is moved to the other move.

<img width="1264" alt="skitch 69" src="https://cloud.githubusercontent.com/assets/11341058/24104056/8be11616-0d57-11e7-8763-a90507315b19.png">
 
**Expected behavior:**

When check availability of this third picking, the moves already reserved must not be altered.


""" Finds location id for changed warehouse.
        @param warehouse_id: Changed id of warehouse.
        @return: Dictionary of values.
        """
        if warehouse_id:
            w = self.pool.get('stock.warehouse').browse(cr, uid, warehouse_id, context=context)
            v = {'location_id': w.lot_stock_id.id}
            return {'value': v}
        return {}
    def onchange_product_id(self, cr, uid, ids, product_id, context=None):
        """ Finds UoM for changed product.
        @param product_id: Changed id of product.
        @return: Dictionary of values.
        """
        if product_id:
            prod = self.pool.get('product.product').browse(cr, uid, product_id, context=context)
            d = {'product_uom': [('category_id', '=', prod.uom_id.category_id.id)]}
            v = {'product_uom': prod.uom_id.id}
            return {'value': v, 'domain': d}
        return {'domain': {'product_uom': []}}
class stock_picking_type(osv.osv):
    _name = "stock.picking.type"
    _description = "The picking type determines the picking view"
    _order = 'sequence'
    def open_barcode_interface(self, cr, uid, ids, context=None):
        final_url = "/barcode/web/#action=stock.ui&picking_type_id=" + str(ids[0]) if len(ids) else '0'
        return {'type': 'ir.actions.act_url', 'url': final_url, 'target': 'self'}
    def _get_tristate_values(self, cr, uid, ids, field_name, arg, context=None):