RMA Driving PartBin Negative for LOT 8.03.403C

Here are the transactions that are creating negative on hand.
MFG-CUS 2880
RMA-INS 2880
INS-MTL 2880
STK-CUS 2880

Lot was returned, put back on the Job, reworked & shipped back to customer. It is driving the On Hand for this lot negative. Is this a problem with manufacturing shipments & MTO when there is an RMA?