Answer
Route the report to the built-in 'IFS PDF Archiver' logical printer instead of creating a new, unmapped one — from the Printer Definitions window, assign the report to that printer. Anything sent to the IFS PDF Archiver lands cleanly in the Report Archive without generating a PDF automatically or leaving behind error-status print job rows, and from there it can be printed manually whenever needed, giving you the 'available in archive, not auto-printed' behavior without the side effect of accumulating failed print job records.