title: moving TFS project collection that wasn't detached
body: <p>I'm attempting to attach a collection from one TFS server to another. This collection was not detached before restoring on to the new server.  Both are TFS 2010.</p>
  
  <p>The problem is that when attempting to attach the collection, it return an error saying the collection was not detached properly. The old TFS server has been removed completely.</p>
  
  <p>Is there a way to force attach such collections or any other solutions?</p>