If I understand it correctly, AutoUnpack only lets you move files which are INCLUDED in a par set. If you have non-rar files in an NZB file, those files will not be moved. Typically this is the case with NFO files and JPEGs included in DVD releases.
Besides that, since ABZ does everything else by itself, it would be great if this final cleanup stage would also be handled by the program itself - without having to use another software in parallel.