When you import files into the Organizer, they are not moved from their original folder location. The Organizer is simply a catalog of the files on your computer. The catalog database keeps track of where those files are stored. Because of this, it is important that you only move, rename or delete your files while you are working in the Organizer. If you do anything to your files in the OS dialog, e.g. Windows File Explorer or Mac's Finder, the Organizer will lose track of the files which can cause problems for you.