I've looked at these listings myself, multiple times and multiple dates, and I believe some of the channel listings had to be misprints. I don't think they actually did double up on channels but the paper printed it that way. Certainly can't prove it without further research, but it would make no sense to have these channels share time when slots were open. Especially KFME and KDIX. I think I found a time period beyond this where it was corrected but not sure how far forward in time that was.
I should mention that it was not KFYR but KXMB that carried part of the ABC lineup. Monday Night Football, ABC Tuesdays when it got really popular, etc. In Dickinson, ND, when ABC was carried locally, then they switched KTHI to KXJB so you could get the CBS programming. I would think they did that here too.