**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.


"""Returns packages from quants for store"""
        res = set()
        for quant in self.browse(cr, uid, ids, context=context):
            pack = quant.package_id
            while pack:
                res.add(pack.id)
                pack = pack.parent_id
        return list(res)
    def _get_package_info(self, cr, uid, ids, name, args, context=None):
        quant_obj = self.pool.get("stock.quant")
        default_company_id = self.pool.get('res.users').browse(cr, uid, uid, context=context).company_id.id
        res = dict((res_id, {'location_id': False, 'company_id': default_company_id, 'owner_id': False}) for res_id in ids)
        for pack in self.browse(cr, uid, ids, context=context):
            quants = quant_obj.search(cr, uid, [('package_id', 'child_of', pack.id)], context=context)
            if quants:
                quant = quant_obj.browse(cr, uid, quants[0], context=context)
                res[pack.id]['location_id'] = quant.location_id.id
                res[pack.id]['owner_id'] = quant.owner_id.id
                res[pack.id]['company_id'] = quant.company_id.id
            else:
                res[pack.id]['location_id'] = False
                res[pack.id]['owner_id'] = False
                res[pack.id]['company_id'] = False
        return res
    def _get_packages_to_relocate(self, cr, uid, ids, context=None):