For anyone interested in easy seeding and saving space on your cache drive.
Many of you probably already know this, but if you want to continue seeding after Couchpotato and Sickbeard move your files, then the Deluge docker container must have your "/Media" folder mapped in the same manner as in the other containers. Otherwise the symlinks will fail. This involves clicking on "Add another path,port or variable" and filling it out in your torrent docker.
Originally I believed the symlinks would work until I restarted Unraid or Deluge. But in reality deluge had a lock on the file, and Couchpotato or Sickbeard would leave a .fuse.. of the same size after renaming. Once seeding was interrupted, then the .fuse.. file disappeared and the ability to seed was lost. After mapping the "/Media" folder, then the symlinks survive a reboot on Unraid, and allow a re-check of the torrent, etc. You will need to pause then resume the torrent or restart deluge to unlock the .fuse.. files to free up the space on your cache drive. This happens often enough between backups and upgrades, so not a big deal.
BTW, it seams that Sonarr won't continue seeding on my setup since it only uses hardlinks and hardlinks won't work across disks or shares. Which is why the change back to Sickbeard.
I want to thank Binhex for make a great collection of docker containers. He truly has made Unraid an enjoyable experience.