Exchange coexistence calendar free/busy;

I have questions for what seems to be a popular problem...exchange coexistence with exchange 2010, 2003 for free/busy and Outlook 2007/2010 clients.  

Environment:
* Exchange 2010 SP1 and Exchange 2003
* Mailbox on 2010 with Outlook 2003 can see free/busy - Outlook 2007/2010 cannot see free/busy for any user with a legacy mailbox on Exch 2003 (however they can see free/busy for other users on Exchange 2010).
* OWA on Exchange 2010 - free/busy for legacy mailboxes on Exch 2003 CAN be seen

I've seen many posts and at this point I'm not sure what the correct expected behavior is for Outlook 2007/2010.  Is it expected behavior for Outlook 2007 to not see legacy free/busy (without doing the obnoxious registry hack forcing legacy mode (until all mailboxes come over to 2010))?  If after Exch 2010 SP1 the availability services IS supposed to carry legacy free/busy to Outlook clients please let me know.  Given that OWA on Exchange 2010 can see legacy free/busy, I think the free/busy replication from 2003 is working....  

Thanks,
Aaron
Aaron_J_MarshallAsked:
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AshwinRaj111Connect With a Mentor Commented:
Do you have a Public Folder in Exchange 2010.

Check the Schedule Free Busy Folder on Exchange 2003 PF and make sure that it has the replica of the Exchange 2010 Public Folder.

Also on the Schedule Free Busy PF on Exchange 2010 make sur that it has the replica of the Exchange 2003 Public Folder.

What about users in Exchange 2003. Are they able to see the Free Busy Information of Exchange 2010 users using Outlook?
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Aaron_J_MarshallAuthor Commented:
Issue resolved itself; replication sorted out over the long weekend.
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