So there are some clients that have not checked in since I made the 4 new 2012 R2 servers the main primaries. The old primaries I need to remove from the zone since they are 2008 R2. Keep trying to upgrade but some kind of logonUI issue after update so I reverted to snapshot before upgrade. Tried this numerous times.

My question is if I make a DNS entry to point the old names to the new servers (EXAMPLE: OLD NAME-ZENAD1 with IP-10.60.10.10 NEW NAME-ZEN1 with IP-10.60.10.110) where now in DNS the name ZENAD1 points to the new ZEN1 with IP address 10.60.10.110 WILL THIS WORK WHEN THEY FINALLY CONNECT FINGERS X'ed