I downloaded and installed PAF 5.1.12 today. It works fine. The data files were converted to PAF 5.I now want to delete PAF 18.104.22.168. Can I delete the PAF 4 program? How do I know what files (if any) from PAF 4 I need to keep? Am I safe to keep only ".paf" files? Do the ".paf" files need to reside in a special location? If I create a special directory for all the ".paf" files, do I need to tell PAF 5 where that is, or will it find them?