Untransfer Postings from a Work Order to a Customer Order

1. We have postings from 4 different work orders that were transferred to the same customer order as order lines. 
2. On the work order, the 4 postings have a Cost Type of “Fixed Price”; Status of “Transferred”; Booking Status of “Authorized”; and CSS Type of “Posted”.
3. The 4 connected customer order lines have a Supply Code of “Service Order” and a Demand Code of “Work Order”.
4. These 4 lines were included in the same invoice created from the customer order. A freight charge was included in the invoice that shouldn’t have been so the invoice was cancelled and the status of the 4 customer order lines was changed back to “Delivered.”
5. The incorrect charge on the customer order was corrected. However, the system will not allows us to create a new invoice for the 4 lines and the corrected freight charge on the customer order. In addition, we are unable to:

• Undo the Delivery of the 4 lines on the customer order because the system will not allow order lines with a Supply Code of “Service Order” to be un-delivered.
• Cancel the 4 lines on the Customer Order.
• Un-transfer the 4 lines from the work orders.

We are going to create ticket with IFS, but I thought I would check with the community to see if anyone had any suggestions.