I migrated my moodle system from 1.9 to 2.2.3 back in August.
In one of my courses, I have some backup files stuck in the folder called "Course Backups."
The only way I can even find the folder is by going into the course and clicking "Legacy Course Files" then "Edit Legacy Course Files" then "Add" and then "Server Files" from the file picker.
This lets me view the folder and files, but I cannot delete them. Normally I would not care, but there are 5 400 mb backups living in there. From what I have gathered via google search is that this "Server Files" area is purged occassionally, but I cannot come up an exact time, or how to force it. I have also checked the permissions on the Manager role - all the pertain to repositories have been set to allow.
If anyone can shed some light on this situation, it would be most appreciated.