I am trying to upgrade my domain to 2012 from 2003. I have installed the 2012 while leaving the 2003 DC in production dc but am having difficulties confirming proper replication before decommissioning my present 2003 dc which was the first in domain computer.
I did not run adprep on the 2003 machine
i have installed GC and all roles on the new 2012 server
i am having a replication issue with group policy where version numbers on the default dc policy and the default domain policy are not the same.
what should my steps be from here to ensure a safe migration and decommisioning.