DNS Issue after upgrade to Windows 2008 R2

Dear All,
I’m facing an issue after I upgrade my Active Directory from Windows 2003 to Windows 2008 R2, when I run the Best Practices Analyzer from Server Manager for DNS, I got the attached error.

I’m getting this error in all DNS servers I have.
The DNS configure as Integrated DNS zone.
The following link attached with the error:
http://technet.microsoft.com/en-us/library/ff807395(WS.10).aspx

They mentioned backing up and restore the zone, but from where I have to do that? All servers have the same issue?

Thanks  Issue
Arabsoft_SecurityAsked:
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mcse2007Connect With a Mentor Commented:
Right click your zone then select delete then right click your forward lookup zone then New Zone. You will need to create new host for machines with static ip address.
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mcse2007Commented:
It appears, the DNS zone transferred during the upgrade has failed?. Have you tried deleting then creating your DNS? It should be able to re registered the domain controller and the computer objects particularly if its AD integrated. I presummed you've transferred the primary DNS to Windows 2008 prior to upgrade?
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Arabsoft_SecurityAuthor Commented:
so what i have to do now? delete the zone and recreate it again? and how i can do that?
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Darius GhassemCommented:
Look in DNS do you have a msdcs.domain.com zone? Is your msdcs folder grayed out under your domain.com zone? If it is then I would recreate the whole zone to remove the delegation.

http://www.experts-exchange.com/Networking/Protocols/DNS/Q_24349599.html
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