title: ClearCase : revert from current version to a labeled version
body: <p>I have made a bunch of wrong checkins  into our source control.
  before starting the modifications I  labeled all the elements versions with a label.</p>
  
  <p>how can I tell clearcase to  do a  merge search and come up with all the files that are newer than the labeled files so that I can roll back the changes ?</p>
  
  <p>when I do a plain merge nothing comes up</p>