How do you handle replacing superstars with an updated model in Universe Mode?

Couldn't really word the title right with I'm trying to ask lol

With Universe, I'd like to continue my 2K25 Universe but a lot of my wrestlers won't have super awesome CAS made in Community Creations until later. Think, Jon Moxley, Kenny Omega, Toni Storm, and so on. Or even DLC characters like The Hardys or Brie Bella.

My first instinct is to make a whatever CAS and give them a render because I usually just simulate my matches so them not actually looking or playing like their character isn't too much of a problem for me. But let's say down the line, The Hardys are finally available, I unlock them, and I wanna replace The Hardy CAS in my Universe with the actual Hardys. Or my placeholder Thekla or Saraya when a really good one comes out in Community Creations. Since wrestlers get their stats changed around as they generate a win/loss record and have buffs/debuffs. How do you transition these characters smoothly into Universe Mode?

Haven't quite done it yet at all, ever. But I was kinda stumped recently when I wanted 08 Kane to put the mask back on and having to switch to a long hair Kane model made me fear that he will lose all his debuffs and the AI may have him lose more than 08 Kane would.

Not sure if this made any sense haha