Replace old PDC with new PDC by just a swap

Is it possible to build an exact copy of my PDC and just swap them out when it is ready?

I have built the same exact win2k3 server PDC with the same IP’s, Domain, rebuilt AD to look exactly the same as the old (new server, same software). But when I pull the old PDC and bring in the new PDC I get security issues and the clients don’t want to come online until I rejoin the domain. Which means going around to all 50 machines and rebuilding them in a sense.

I would like to do this without the clients even knowing what happened and without having to rejoin each client to the domain.