Yes, it ends that way as well on my version. I have a feeling that the credits were slightly different on the broadcast version on UK TV. As I recall, I saw the last 10 minutes on TV when I got home. I may be mis- remembering that though.
I agree with you on your point about modern TV as well. Funny enough, I watched all the episodes of Little House on the prairie including the last three full length films that were made. I am currently also watching Columbo again and recently ordered season 4 on DVD.I love trying to work out who the murderer is before Columbo. I don't always get it right though.
The DVD supplier you talk about was probably supplying bootleg versions of the film, so I doubt he wanted to get into conversations about quality, as I am sure that would have been a constant issue for him.
Good luck with Bonanza, there are 430 episodes of that show. I can't believe it started in 1959.