Maddie influence the direction of their relationship and caused Jean to leave X-Factor for a few issues and hang out with Forge and Banshee over in UXM during that time. She having to reconcile those memories were a thing and remained an ongoing plotline in the book under Simonson.
Claremont took over in the final 2 arcs and he references the memory stuff as well by having recall Phoenix's time as her as if she had lived it
The stuff with Maddie hasnt been mentioned (that I can recall since) bc it was largely resolved in X-Factor and hadnt been relevant. It was used to stall her and Scott's relationship and Jean was able to get past this. She herself only met Maddie once in the 90s and unfortunately for Maddie, not much was done with her outside of X-man. on the contrary, the DPS is a timeless tale that always comes up, hence why its been more prevalent in terms of Jean going forward