Hi,
I'm going to second Frank's answer. I just set up a new Remit To address ID for my favorite vendor (Aaron Fitz) and changed the check name. The check printed with the new address and the new check name. Are you using a modified report for the check? Could someone have changed the fields on the report?
I don't think there is any difference between versions, but which release of GP are you using?
Kind regards,
Leslie