**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.


seq_obj = self.pool.get('ir.sequence')
        picking_type_obj = self.pool.get('stock.picking.type')
        
        in_seq_id = seq_obj.create(cr, SUPERUSER_ID, {'name': warehouse.name + _(' Sequence in'), 'prefix': warehouse.code + '/IN/', 'padding': 5}, context=context)
        out_seq_id = seq_obj.create(cr, SUPERUSER_ID, {'name': warehouse.name + _(' Sequence out'), 'prefix': warehouse.code + '/OUT/', 'padding': 5}, context=context)
        pack_seq_id = seq_obj.create(cr, SUPERUSER_ID, {'name': warehouse.name + _(' Sequence packing'), 'prefix': warehouse.code + '/PACK/', 'padding': 5}, context=context)
        pick_seq_id = seq_obj.create(cr, SUPERUSER_ID, {'name': warehouse.name + _(' Sequence picking'), 'prefix': warehouse.code + '/PICK/', 'padding': 5}, context=context)
        int_seq_id = seq_obj.create(cr, SUPERUSER_ID, {'name': warehouse.name + _(' Sequence internal'), 'prefix': warehouse.code + '/INT/', 'padding': 5}, context=context)
        wh_stock_loc = warehouse.lot_stock_id
        wh_input_stock_loc = warehouse.wh_input_stock_loc_id
        wh_output_stock_loc = warehouse.wh_output_stock_loc_id
        wh_pack_stock_loc = warehouse.wh_pack_stock_loc_id
        
        customer_loc, supplier_loc = self._get_partner_locations(cr, uid, warehouse.id, context=context)
        
        input_loc = wh_input_stock_loc
        if warehouse.reception_steps == 'one_step':
            input_loc = wh_stock_loc
        output_loc = wh_output_stock_loc
        if warehouse.delivery_steps == 'ship_only':
            output_loc = wh_stock_loc
        
        color = 0
        available_colors = [c%9 for c in range(3, 12)]  
        all_used_colors = self.pool.get('stock.picking.type').search_read(cr, uid, [('warehouse_id', '!=', False), ('color', '!=', False)], ['color'], order='color')
        
        for x in all_used_colors:
            if x['color'] in available_colors:
                available_colors.remove(x['color'])