Migrate OCS 2007 global settings from the System container to the Configuration container using the Microsoft Office Communications Server 2007 Global Settings Migration Tool.
You might need it for OCS R2.
New tool you can download it here: http://www.microsoft.com/downloads/details.aspx?FamilyID=23236784-508E-44C9-809D-30FF245928D8&displaylang=en