Need some help with All-Star team rosters

Ok I just downloaded the Chicago 96 team from Key-Fly and I would like to add Michael to the 90s All-Star team. How would I do this?

In edit roster menu select MJ and there should be something like reassign, sorry i dont have the english version.
Then you can select any team you want (except for created teams)

If I can't change created teams, then how would I add Michael Jordan to the 90s all star team?