u/SnotchCoff

This is about hacked orcs. I've dominated some of them and they are in my garrison. I want to use them in conquests and normal nemesis missions. Also don't want to make them warchiefs cause other players won't enjoy it.
My question is if I keep them in normal army would they be replaced or killed by nemesis system when advancing time( like a lowlife feral slayer which don't have a slight chance against them)? I don't want to loose my hacked orcs.