During the scan of the last MAME version I always encountered the problem, that single roms, that should be backup'd were gone after runnign the scanner. Files, that were removed as unknown sets were in the backup folder. The special thing about those files were, that they were just moved from one set to another, because of new clones or different parent-clone relations. But after the scanner run those files, were nowhere. Neither in the new, old set or the backup folderCould it be, that ClrMAME doesn't properly backup those files anymore? Or has an option changed, that I have to set explicit now?