When you try to generate multiple documents with Mail Merge....if you choose to generate a file for all the records from the database, on the 'output' groupbox if i choose radiobutton file, and after that in the "save merged documents" groupbox if i choose to save as individual documents....the result is a sigle document.
I think that the code behind the radiobutton "as individual document" it was incorrect replace with that from "as sigle document".
Unfortunately i didn't have the chance to test if the code was changed between them....because if i choose "as single document", the field from the "as individual doc" is inactive.