Completing the Upgrade
The above steps are optional.
We recommended that you perform the optional post-upgrade steps in the order shown above. For example, do not demote the old DC until after you have successfully swapped the IP addresses, and do not swap the computer names until after you have demoted the old DC.
After you perform each optional step, you can use U-Move to check that the steps were done correctly.
|U-Move for Active Directory|