ahh I did not see the AD zone at first. This is a bit different. I could
not recommend changing only one to a primary, as this used to be an issue (I
think is fixed now but don't know for sure.) I would definatly export (use
*w2k3 dnscmd.exe) the zone first to a text file and do this at night when no
one is using the system if able. Convert all of the AD zones to std
primaries and let ad get this into its head. Delete the other primary zones
from the other dcs, leaving only one dc with a primary zone. Make sure this
zone points to a file on the file system (i.e .../dns/myzone.dns) If not,
delete this zone too and create it again. Once you see the file in
..../dns/*.dns then add your records to it - make sure the format is correct.
Your export from before (dnscmd.exe /zoneexport zonename.com file.txt)
should be in correct master file format. Now reload the primary zone on the
1st dc. Test your zone with many records (use ping, nslookup, dig, etc.)
When your happy, promo this to an ad integrated zone. Your other dcs should
pick this zone up on next ad replication cycle.