I don't usually stick my nose into Work Item Tracking issues because its not my area.  However, this issue is the cause of so much confusion that it reflects poorly on the whole TFS to TFS migration tool.  When you are running a Work Item Tracking (WIT) migration with the TFS to TFS migration...

The short answer is yes.  Every version of every file and folder that is mapped for migration will be downloaded to the client then checked into the target server. However, it may not be preserved in the way you expect. The server does not allow the TFS to TFS migration tool (or any migration tool...