**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.


return []
class stock_inventory(osv.osv):
    _name = "stock.inventory"
    _description = "Inventory"
    def _get_move_ids_exist(self, cr, uid, ids, field_name, arg, context=None):
        res = {}
        for inv in self.browse(cr, uid, ids, context=context):
            res[inv.id] = False
            if inv.move_ids:
                res[inv.id] = True
        return res
    def _get_available_filters(self, cr, uid, context=None):
        """
           This function will return the list of filter allowed according to the options checked
           in 'Settings\Warehouse'.
           :rtype: list of tuple
        """
        
        res_filter = [('none', _('All products')), ('partial', _('Manual Selection of Products')), ('product', _('One product only'))]
        if self.pool.get('res.users').has_group(cr, uid, 'stock.group_tracking_owner'):
            res_filter.append(('owner', _('One owner only')))
            res_filter.append(('product_owner', _('One product for a specific owner')))
        if self.pool.get('res.users').has_group(cr, uid, 'stock.group_production_lot'):
            res_filter.append(('lot', _('One Lot/Serial Number')))
        if self.pool.get('res.users').has_group(cr, uid, 'stock.group_tracking_lot'):
            res_filter.append(('pack', _('A Pack')))
        return res_filter
    def _get_total_qty(self, cr, uid, ids, field_name, args, context=None):