I’ve checked the ABC footage, and after being IVTC it still has the interlaced look. Again, this is only for newly inserted footage. I’m thinking this was an issue with how the thing was broadcast in the first place.
I am thinking that the telecine, whether done by ABC or WB, had ghosting/after-image issues. It may have been done at ABC - there was a Star Trek II project in another thread, and there was no way to perfectly IVTC the image, there were some blending artifacts that just couldn’t be eliminated. And even though I was only born in 1987, I know from some of our old tapes that some of the Bond film airings looked atrocious in this regard, I had a tape from 1989 with a promo of OHMSS that was a smeary mess. And I think I still have a 1986-87 airing of Goldfinger that looks for all the world like it’s 5-10 years older than it is.