Shipment Cost not distributed evenly when calculated on container basis.

Hi guys,

My scenario for shipment cost is per container basis. So my price is calculated based on Destination, Container Size, Vendor and Shipping type.

It has nothing to do with material as this calculation is not base don handling unit or weight. Now when I create shipment cost, the system adds the total cost to the last material. It does not distribute evenly as a result our CO posting cant be captured.

Anyone has had this problem before?