A few years ago a 2003 DC was demoted on the site here, prior to visualization. All ran ok and the server is listed under the Computers container in AD Users and Computers, no longer in the Domain Controllers Section.
I'm about to update our function level to 2003 Native ( moving to exchange 2010 ) and when I checked the demoted server is still showing in Active Directory Sites and Services but there are no NTDS settings listed.
I checked replmon and the demoted server is listed but cannot be added as a monitored server, our remaining servers are all replicating fine.
The server is a file server and has been working fine in this state for at least a couple of years.
I have seen posts with similar issues and the choice comes down to just right clicking and deleting the entry in Sites and Services or running metadata cleanup.
Could anyone tell me whats the best process to follow? I don't want to remove/delete the server as its in uses 24/7 but I would like to know that AD has no unusual entries before the function level change.