I have an external trust in place between two Active Directory domains in two different forests (one of them Windows Server 2008 R2, the other one Windows Server 2003); but I need the trust to be a forest trust, because this is what System Center Data Protection Manager needs in order to backup servers between different domains.
Is there anyway to modify the type of the existing trust without deleting it?
If deleting and re-creating the trust is actually a requirement, will this create any problem in resource access (user/group mappings, ACLs, etc.) once the trust gets established again?
Blocking cross-domain access for a couple of minutes is not a problem, but having to re-configure anything would be a big one.