I wondered if episodes from the early 1990s (and earlier than that) had altered reruns. I guess it is possible (there is a sandbox page listing script inconsistencies, makes me wonder if some cases were just the wiki people having copies of altered reruns). It's been said that Alphabet Polka only aired once, I often wonder if they just meant one episode or if they removed it in the rerun of the episode after the complaints.
I don’t know if I have asked this yet, but is it possible street scene footage from the lost seasons 1-3 + and the one missing 5 and one missing 11 episodes exist as solo street scenes? Only asking with the instance we got a release of “I am Somebody” on Old School Volume 1.