Just ran into this at a client. 4.40.0.7. Re-initialized data entry files and removed records from GL_CompanyActiveBatch, just like in the Resid. Ok, now nice clean data files. Next time I update a Return of Goods, same deal. I try to open the PO I posted the return against and get the message. Here's the crazy part. Possible workaround is DFDM to remove a stranded record in PO_ReceiptReturnMatRqByPo.m4t. The Engineering Status on the resid (539589) shows it as Closed-NAB! Are they kidding, or am I reading this wrong?