After completing the upgrade from Exchange 2003 to Exchange 2007 and moving all the accounts, the 2003 server was decommissioned and removed from the Active Directory domain. However, I have now realized that the users that existed before the upgrade are still in the First Administrative Group organizational unit(OU), while all users created since the upgrade are in the Exchange Administrative Group OU. My understanding is that the Exchange Administrative Group replaced the First Administrative Group as the default in Exchange 2007, but I have not been able to figure out how to move those "legacy" users into the Exchange Administrative Group now that the 2003 server is gone.The main problems that this is causing is that users who existed before the upgrade don't see new users in the Global Address List.Any ideas how I remedy this?Thanks,Dustin

hi could you please run the exbpa tool and check is there any specific recommendation for your issue www.exbpa.com

The Best Practices Analyzer returns a message stating that "The site-side public folder database for administrative group 'First Administrative Group' has been deleted." It points me to Technet article http://technet.microsoft.com/en-us/library/4a057fc7-fbaf-4863-9675-318d5d0139f0.aspx. I tried following it, but when I try to modify the distinguishedName property of the First Administrative Group, it says "A database error has occurred." and doesn't let me continue. I'm pretty sure that the article only addresses a symptom of the overall problem, not the problem itself.

I had this happen (sort of) when I was playing with the Beta version of EX 2007 in a Lab. I was able to bring "A" not "the" Exchange 2003 server online with a first admin group online, and move the users affected to it. Then I moved them back to the new 2007 group. Don't know if this will work for you, but I thought I would throw it out there.

Thanks for the suggestion. I think that would probably work if I still had an Exchange 2003 server, but my 2003 server was long ago wiped and sent off to another department. I thought I had found a way to do it using the LPD.exe and adsiedit.msc tools, but that didn't end up going anywhere.I guess I'll keep searching/trying.