WMS Cost Group Transfer resetting onhand ageing

Hello Gurus

We are facing an issue in our WMS environment and trying to figure out if we missed something in our setup or its an oracle bug.

Our environment is FIFO enables and when we do 'Cost Group Transfer' in system, it is resetting onhand ageing information. Mean its updating 'Orig_Receipt_Date' to transaction date of cost_group_transfer in mtl_onhand_quantities_detail table instead of keeping actual receipt date of that onhand.

Any help on this regard will be highly appreciated.

Thanks, VP