/**
  * Change the track a submission is currently in.
  */
 function changeTrack($args, $request)
 {
     $paperId = $request->getUserVar('paperId');
     $this->validate($request, $paperId);
     $conference =& $request->getConference();
     $schedConf =& $request->getSchedConf();
     $submission =& $this->submission;
     $trackId = $request->getUserVar('trackId');
     TrackDirectorAction::changeTrack($submission, $trackId);
     $request->redirect(null, null, null, 'submission', $paperId);
 }