Public Folders - Exchange 2007 / 2010

Hello Experts,

Is there a way to "regenerate" the public folders from the PF database?  This is my dilemma... I upgraded Exchange from 2007 to Exchange 2010.  After making sure mailboxes/public folders and everything work correctly over the past week (by powering off Exchange 2007 box), I was ready to uninstall Exchange 2007.  

However, after powering Exchange 2007 back on, none of us can see any public folders from Outlook... and I can't see the any of the public folders within Exchange Public Folder Management Console either.  Not sure what went wrong, and how to recover the PF's.

Please advise.  Thanks.
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swgitIT ProfessionalAsked:
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Simon Butler (Sembee)ConsultantCommented:
Check the properties of the mailbox databases to ensure the correct public folder database is assigned to each one.

On the Exchange 2007 server run get-publicfolderstatistics, I expect it will come back empty.

Was the Exchange 2007 server a migration from Exchange 2003 originally? I wonder if that wasn't completed successfully.

Simon.
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Ben HartCommented:
Did you run teh MoveAllreplicas.ps1 script?
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swgitIT ProfessionalAuthor Commented:
I did, and I also checked all PF's to make sure they replicated successfully, with number of items, file sizes, etc.  And I can see them all and they've been working fine, until I turn the old Exchange back on.

Both Exchange servers (2007 & 2010) show the PF databases mounted, with 1GB+ in size, but nothing shows on both when trying to navigate to the folders via PF Management Console.
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swgitIT ProfessionalAuthor Commented:
@Simon - my Exchange 2007 is kinda a mess right now, so I am thinking of not wasting more time on recovering the PFs there.  I was able to do a restore from backups of some of the PFs on Exchange 2010, and the rest of the PFs I am told can be recreated from scratch.

What concerned me now is... after following your first advice to check with properties of each mailbox database... the existing of the default mailbox database "Mailbox Database 0508393246".  On the "Client Settings" > the default PF points to Exchange 2007 PF database.  My question is... can I dismount and remove this default mailbox database, and if it's safe to do so?  Please advise.  Thanks.
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Simon Butler (Sembee)ConsultantCommented:
Is there anything in that mailbox database?
The default one usually contains system and arbitration mailboxes which you would need to move to another database.
Another option would be to just change the public folder database on that mailbox database to the one on the Exhcange 2010 server.

Simon.
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swgitIT ProfessionalAuthor Commented:
@Simon - Thanks!
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