Your dns.log file may contain the info but I don't know the codes, trying to hunt them down right now. Sorry I'm not able to respond as fast as I'd like running around today and right now making ...

I want to avoid creating duplicates on the network. *edit* I am not seeing any errors in the DNS event log on both servers. *edit 2* If I right-click on the zone: Status: Running. Type: Primary.

If your DNS cannot create zones from the registry and you get Event ID 504, DNS server could not create zone, see these proven solutions.