Yeah I remember the exact date of the premiere October 31, 1992 because I wrote the date on my VHS label and then part 2 was November 7, 1992 and then the third episode was during Thanksgiving weekend in which Fox Kids had a call in countdown of most requested Fox cartoons.
Then after the X-Men went on break and came back on schedule to finish the rest of the season in early 1993 in which the re-aired 'Night Of The Sentinels' two-parter had corrected the animation mistakes.