Thanks, @RobertWhite, that's where I was gonna look at next. It's both companies, several fields. And with my last/successful data conversion attempt, I didn't set any of the P/O Hist settings because it seemed like that was causing an issue. Btw, I don't create the PO Hist at time of data conversion anymore. I just do it afterwards cause it seems to often cause issues, and it only takes a minute or two to run even for a client with a huge PO Entry file.