WorkOrderItemFulfillment.shipGroupSeqId added as part of primary key?

[Christian Carlow]

Does an additional entity need to be created to extend
WorkOrderItemFulfillment to support relations to more than one
OrderItemShipGroupAssoc?  WorkOrderItemFulfillment excludes
shipGroupSeqId from the primary key so only 1 production run to be
related OrderItem.  Should something like WorkOrderShipFulfillment be
created as a copy of WorkOrderItemFulfillment but includes
shipGroupSeqId as part of the primary key?