Multiple main titles on dvd

I was hoping someone might be able to clear up an issue for me. I’ve noticed this a few times, but recently I was backing up my Attack of the Clones DVD and noticed in DVDShrink the main movie file consisted of two titles (1 & 14). Title 1 was the bulk of the movie, but title 14 consisted of only 44seconds of video from the middle of the movie. Can anyone tell me what’s going on with this and whether I need to be concerned about this if I want to reauthor the disk with movie-only?