DNS reverse lookup zones

I have just changed our whole IP range on win2008 R2 network (win7 sp1 clients) which involved creating new DNS zones. I deleted all existing records on the old range (which in hindsight I think I should have left) and now see the new client IP's populating the forward lookup zones from DHCP.

The Q is that the reverse lookup zones dont seem to be populated. I have got the settings below ticked:
In Forward lookup zone record - 'Update assiciated pointer record'
In DHCP - 'Always dynamically update DNS A and PTR records'
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PeteAsked:
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DLeaverConnect With a Mentor Commented:
When did you recreate the Reverse lookup zone?  If it was recently then you may just have to wait for the clients to check in with DNS (which is normally every 24hours)

One test would be to remove a PC's DNS record from the FLZ and then go to that PC and run ipconfig /registerdns and see if both records are entered in both the FLZ and the RLZ
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julian_bruntConnect With a Mentor Commented:
Did you add the reverse lookup zone to be populated?
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PeteAuthor Commented:
yes I have and the servers are actually in that zone (automatically, i haven't manualy added anything) but no clients..
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araberuniConnect With a Mentor Commented:
I am wondering did you created new reverse look up Zone for new IP range. Please create it and reboot clients to check PTR record. http://support.microsoft.com/kb/323445
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PeteAuthor Commented:
I did create the reverse lookup zone. The servers have populcated it.

DNS just passed Best Practices Analyser in server manager.
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