Hi markus101,
It seems to be working now. The only change I made in Deluge is tick “Stop seeding when share ratio reaches 0.1.” I next ticked “Remove torrent when share ratio is reached.”
It now reflects in Sonarr as downloaded, and post processing works already. It also copies to the correct share. The downloaded file is left in Deluge, it still shows seeding. and doesn’t delete the file.