I have been working on getting SABnzbd set up as a docker on my unRAID box and I seem to have come across some folder permission issues.
I dove into the docker settings for sab, and set a container volume as well as host path of "/mnt/user/Misc/Usenet/" so that I could get SABnzbd to use the usenet folder as the 'completed download' folder.
Everything seemed to have worked right as sab downloaded, extracted and moved the media to this usenet folder. However, when trying to move/delete