We are in the process of migrating from Exchange 2003 to Exchange 2007. All users have been migrated. This morning, I replicated, then moved all of the public folders over to Exchange 2007. After moving the public folders, I dismounted the Public folder store on the old Exchange 2003 server. Now, users are unable to see the free/busy informtion when they try to schedule appointments. After discovering that employees were no longer able to see the free/busy information, I turned the Exchange 2003 public store back on, but I am unable to get the data replicated back to the Exchange 2003 Public Folder store. Also, I should mention that all of the clients are still on Outlook 2003. Due to budget constraints, there are no plans to upgrade the clients until at least next year. Will I need to keep the old server running to accommodate Outlook 2003? How can I get the free/busy information back?