After a couple of restarts I got 5 of my original movies to appear in the library. I discovered that I could not reload the movies and I could not force a rescan of the movie folder. It was like PD still had a library but would not display them. So I went ahead and completely uninstalled the program, rebooted a couple of times and then reinstalled the program. PD is now loading the movies into the library. I am suspecting that sometime during the editing of the previous movies that the library got corrupted and it would not work any longer.

Before I re-edit my movies to get the correct cover art and title, is there a way to backup the library so if this happens again I can simply go back to the last saved copy of the library?