At the beginning sorry for my english not the best.

I need to migrate user accounts from OES11 to AD and then turn off the
servers OES11. Of course, in its structure have DSfW servers and
therefore it is enough "Trust Relationships" or the other way is to
import users with passwords, I might add that in my structure I also
have GroupWise 2014 that I want to keep.

Best Wishes,