How would you guys handle this?

You need to move one primary DNS zone to another up and coming DNS server. I am really wanting to find a link to microsofts way but would also like to hear how others handle this situation.
Thanks
Oh and the new zone must be primary and needs to be seemless to the clients.
Thanks

Oh and the new zone must be primary and needs to be seemless to the clients.
"Our arrows will blot out the sun."
"Then we will fight in the shade."
"Then we will fight in the shade."
Comments
Of course the best way is to use active directory integrated zones as they can do incremental transfer and all multiple read/write copies.
Also, just an FYI, IXFR doesn't have anything to do really with if it's AD integrated or if it's primary vs secondary. It has to do with which version of Windows you are using. Windows NT4 supported only AXFR and Windows 2000/2003 support IXFR for all zone transfers.
http://technet2.microsoft.com/WindowsServer/en/library/940cdf9b-8e43-4b08-9a53-9fc2152644031033.mspx?mfr=true