**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.


addons/stock/stock.py
FROM stock_quant WHERE''' + domain + '''
           GROUP BY product_id, location_id, lot_id, package_id, partner_id
        ''', args)
        vals = []
        for product_line in cr.dictfetchall():
            
            for key, value in product_line.items():
                if not value:
                    product_line[key] = False
            product_line['inventory_id'] = inventory.id
            product_line['theoretical_qty'] = product_line['product_qty']
            if product_line['product_id']:
                product = product_obj.browse(cr, uid, product_line['product_id'], context=context)
                product_line['product_uom_id'] = product.uom_id.id
            vals.append(product_line)
        return vals
    def _check_filter_product(self, cr, uid, ids, context=None):
        for inventory in self.browse(cr, uid, ids, context=context):
            if inventory.filter == 'none' and inventory.product_id and inventory.location_id and inventory.lot_id:
                return True
            if inventory.filter not in ('product', 'product_owner') and inventory.product_id:
                return False
            if inventory.filter != 'lot' and inventory.lot_id:
                return False
            if inventory.filter not in ('owner', 'product_owner') and inventory.partner_id:
                return False
            if inventory.filter != 'pack' and inventory.package_id:
                return False
        return True
    def onchange_filter(self, cr, uid, ids, filter, context=None):