Issuing on FIFO basis for items received through Sales Returns

Hi.,

We are in Dynamics AX 2009 environment and the inventory items are batch controlled and FIFO issue is in practice. There are many sales returns and the sale returns are getting to the stocks without any issue. But my issue is that these on hand stocks received from sales returns are not picked for automatic reservation according to the FIFO  order.

Is this the way the AX 2009 works or we have missed to link the sales return in FIFO basis issues.

Please help

Thank you in advance