4 sites, two different domains in domain trust relationship.
The 2nd domain is a 2003 domain that exists at one site, a remote site that connects to 1st, 2008 domain through VPN connection on Sonicwall.
I want to remove the 2003 DC at this remote site and replace it with a 2008 Member DC and connect it to existing domain.
What is a summary of proper course of action?
Would it start with decommissioning the 2003 DC even though it is the first,last and only DC for this solitary domain?