I'm having an issue where every time I add users to the Enterprise Admin group in AD they are shortly thereafter removed. I have Domain Admin rights. I'm wondering if this has anything to do with the AdminSDholder. From what I understand though, that should only affect the security ACL on the actual enterprise admin group object, not the group membership.
I keep having to re-add myself and the other Domain Admins to the group in order to manage our child domain.