Your pictures look there to me?
If you ran a scan database if you where missing all your pictures without checking to see your host did not change your server hosting paths you would effectively delete your photos sure.
Thats why backups are essential for any site. I would assume because I see all your photos you restored a backup and corrected the path.
If you just lost some of your pictures I would suggest you ensure those actual data directories exist on the server and somehow they where deleted because if Photopost can not actually find the photo it will delete the photo entry.