Movies disappearing from Library after adding Content Info

I am in the process of adding info to my DVD ISO collection.  The files are stored on external WD Element HDDs that are plugged into the Hub’s USB ports.  I’ve done this process several times and after I grab content for certain movies the movies disappear from the media library!  It happens to the same movies everytime I do this.  Any ideas?

I figured it out.  Once the info is retrieved from the database, the files are sorted according to title, including “The”.  DUH!