By God Game Freak if you put this in the games of 7th generation and now it turns out that's why you can not integrate them with sword and real shield .. is it really ????? I do not think it was difficult since all the 810 pokemon animations were ONLY AGGREGATE
They really are lazy
If you do not believe me, see for yourself ...
https://m.youtube.com/playlist?list=PL0Xf4mLPn3d85kRHcXX5zgLxbvOkkFacUp