A number of auto-attendance sessions have disappeared for a tutor's course on Moodle 2.7 at our school.
As of 4th March, only the first session of the term was visible - but the tutor uses moodle every week to record attendance.
As of 10th March - there's only 3 sessions up there. 17th Feb which I think the tutor has manually entered again, and the most current one 3rd March.
I've checked the Report Logs and there is no evidence that sessions were deleted.
What could cause this to happen? And is there any way to retrieve the data?