**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.


res = set()
        for pack in self.browse(cr, uid, ids, context=context):
            res.add(pack.id)
            if pack.parent_id:
                res.add(pack.parent_id.id)
        return list(res)
    _columns = {
        'name': fields.char('Package Reference', select=True, copy=False),
        'complete_name': fields.function(_complete_name, type='char', string="Package Name",),
        'parent_left': fields.integer('Left Parent', select=1),
        'parent_right': fields.integer('Right Parent', select=1),
        'packaging_id': fields.many2one('product.packaging', 'Packaging', help="This field should be completed only if everything inside the package share the same product, otherwise it doesn't really makes sense.", select=True),
        'ul_id': fields.many2one('product.ul', 'Logistic Unit'),
        'location_id': fields.function(_get_package_info, type='many2one', relation='stock.location', string='Location', multi="package",
                                    store={
                                       'stock.quant': (_get_packages, ['location_id'], 10),
                                       'stock.quant.package': (_get_packages_to_relocate, ['quant_ids', 'children_ids', 'parent_id'], 10),
                                    }, readonly=True, select=True),
        'quant_ids': fields.one2many('stock.quant', 'package_id', 'Bulk Content', readonly=True),
        'parent_id': fields.many2one('stock.quant.package', 'Parent Package', help="The package containing this item", ondelete='restrict', readonly=True),
        'children_ids': fields.one2many('stock.quant.package', 'parent_id', 'Contained Packages', readonly=True),
        'company_id': fields.function(_get_package_info, type="many2one", relation='res.company', string='Company', multi="package",