Remember that TFS loses shared file histories so only move projects within TFS NOT in VSS if you are rearranging file/project structure – otherwise you WILL lose your history.
Please read the post for more details:
http://social.msdn.microsoft.com/Forums/en-US/tfsversioncontrol/thread/9b8be1b1-a0fb-466a-b943-c574adad0222
Regards Bhargava Vangapally, Architect, Software Architectural Group.
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