Backup and restore

Thank you for this suggestion, Ken. This is out of my scope, unfortunately, so I'm likely to end up promoting a better configurable context freezing. There are some useful follow-up issues here https://tracker.moodle.org/browse/MDL-63984 "Followups for Context Freezing , and I think I'll add my request(s) there.
Anyone interested in more robust context freezing - pay heed
Best wishes,
Przemek