title: jenkins started with all jobs lost, trying to use 'copy existing job' feature
body: <p>the CI server was disconnected for a while for some strange reason from the network and when it came back up, jenkins displayed with no jobs. however in the directory where the jobs live, /var/lib/jenkins/jobs/, the two jobs that should appear are there, but don't show any evidence of existence in the web client.</p>
  
  <p>i tried using the 'copy existing job' and then pointed it to /var/lib/jenkins/jobs/existing_test but it tells me: no such job /var/lib/jenkins/jobs/existing_test</p>
  
  <p>any suggestions as to how to get this to work ?</p>