We migrated from Exchange 2003 to 2010 and I’m now ready to uninstall Exchange 2003. The problem I’m facing is I cannot remove Public Folders. I don’t want to move Public Folders over to Exchange 2010 since we have no need for them. Besides, when I try to move replicas to exchange 2010, I’m getting an error, “the token supplied to the function is invalid”. Can somebody please shed some light on the process of removal and Exchange 03 uninstall?