**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
for move_dict in prod2move_ids.get(ops.product_id.id, []):
                    move = move_dict['move']
                    for quant in move.reserved_quant_ids:
                        if float_compare(qty_to_assign, 0, precision_rounding=precision_rounding) != 1:
                            break
                        if quant.id in quants_in_package_done:
                            continue
                        
                        if ops.package_id:
                            flag = quant.package_id == ops.package_id
                        else:
                            flag = not quant.package_id.id
                        flag = flag and ((ops.lot_id and ops.lot_id.id == quant.lot_id.id) or not ops.lot_id)
                        flag = flag and (ops.owner_id.id == quant.owner_id.id)
                        if flag:
                            max_qty_on_link = min(quant.qty, qty_to_assign)
                            qty_on_link = _create_link_for_quant(ops.id, quant, max_qty_on_link)
                            qty_to_assign -= qty_on_link
                qty_assign_cmp = float_compare(qty_to_assign, 0, precision_rounding=precision_rounding)
                if qty_assign_cmp > 0:
                    
                    
                    still_to_do += [(ops, ops.product_id.id, qty_to_assign)]
                    need_rereserve = True
        
        all_op_processed = True
        for ops, product_id, remaining_qty in still_to_do:
            all_op_processed = _create_link_for_product(ops.id, product_id, remaining_qty) and all_op_processed
        return (need_rereserve, all_op_processed)
    def picking_recompute_remaining_quantities(self, cr, uid, picking, context=None):