Automated course backup in selected course categories?

Dear Moodle Friends,

I'd like to be able to restrict automated course-backups and allow them only in some course categories (or prevent them in some categories - either way). Is this possible?

I've been thinking of combining context freezing with auto-backups, but context-freezing is too invasive - it stops teachers from importing contents from "frozen" courses into other courses and precludes personal back-ups. Were this possible, I could set timed conditions for auto-backups to only process freshly modified courses and to leave alone the past courses.

Is there a solution for my situation?

Thanks for any suggestions and pointers. 

Kind regards,

Przemek