title: Backup Rundeck logs: cannot load old logs into new rundeck
body: <p>when I backup Rundeck projects, I have moved jobs into new Rundeck successfully and copied the /var/logs/rundeck folder into right place of new rundeck server. But I cannot read execution logs on web. 
  anyone could help me resolve this problem? let me see the logs of each jobs on web.
  thank you!</p>