One entry is a serial (15 episodes, 303 minutes) , the other a movie version of that serial. I'll let someone else dig into what to do here. We have always allowed the old serials as one entry in the movie section. On IMDb they have the movie entry with all credits being listed as (archive footage). I guess the deciding factor would be how the movie version was released.

I personally think the edited feature version should be an alternative version rather than a second movie entry. But these entries are really old, it's probably no big deal if we keep a few edited serials around until we have proper support for alternative versions.