I have the iTunes Extras for a movie, but not the movie itself.

Specifically, its the new star trek movie. I bought it a while back, but I got a new computer between then and now. I wanted to watch it, but I just realized that I didnt have it for some reason. I only have the iTunes Extras. When I went to check it out on the app store, It acted as if I had never bought it, and wanted me to buy it again.

Any way to solve this issue?