I'm not sure if you mean Domino domains or Windows domains. If it is a Windows domain, Domino is unaffected. You can copy/paste the files and everyone will be fine as long as IP addresses, DNS, etc., are correct. If you are talking about Domino domains, it may require some work. At a minimum, you will need to cross-certify the domains so that the people will be able to access the new server. Ideally you would bring over the names.nsf and put its entries in the new names.nsf. You should then recertify everyone to the new Domain structure. This can be accomplished via the name change feature and AdminP.
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