Although The Conners season 7 could technically bring back one major Roseanne star for a final cameo, the spinoff’s storylines have deprived this character’s potential return of any emotional impact. The Conners has a large cast of characters, most of whom the show borrowed from its predecessor, Roseanne. When Roseanne was revived in 2017, the series proved almost as big a hit as the family sitcom was throughout its original 1989-1997 run. However, series star Roseanne Barr went on a racist Twitter rant shortly after the series ended, resulting in the network firing her and retooling the series.
https://screenrant.com/the-conners-season-7-david-johnny-galaecki-return-not-work/