**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
""" It traces the information of lots
        @param self: The object pointer.
        @param cr: A database cursor
        @param uid: ID of the user currently logged in
        @param ids: List of IDs selected
        @param context: A standard dictionary
        @return: A dictionary of values
        """
        quant_obj = self.pool.get("stock.quant")
        quants = quant_obj.search(cr, uid, [('lot_id', 'in', ids)], context=context)
        moves = set()
        for quant in quant_obj.browse(cr, uid, quants, context=context):
            moves |= {move.id for move in quant.history_ids}
        if moves:
            return {
                'domain': "[('id','in',[" + ','.join(map(str, list(moves))) + "])]",
                'name': _('Traceability'),
                'view_mode': 'tree,form',
                'view_type': 'form',
                'context': {'tree_view_ref': 'stock.view_move_tree'},
                'res_model': 'stock.move',
                'type': 'ir.actions.act_window',
                    }
        return False
class stock_move(osv.osv):
    _name = "stock.move"
    _description = "Stock Move"
    _order = 'date_expected desc, id'
    _log_create = False
    def get_price_unit(self, cr, uid, move, context=None):