possible listing dupes?

I'm not sure this is the place to ask, but I see 3 titles listed as both a miniseries and separate films, and I'm wondering if it's an error. It sure is confusing if it's not, I spent all day mixed up. Could be some weird licensing thing I just don't understand. It's the 3 Tony Hillerman adaptations for PBS in 2002 listed under Skinwalkers: The Navajo Mysteries [tt6954520]. Each is also listed as standalone films as well [tt0312278, tt0369347, and tt0367135]. I looked around for somewhere to report a typo or error on imdb, but I'm just not seeing anything.