by Doug Moody.
This was also a problem with 2.4. Backups showed up in the restore list, but showed as skipped in the admin backup reports.
My solution to be sure that backups were indeed happening was to make a backup in an additional location via the automated backups. That way, even if moodle and the moodle database crashed, there would be a directory on my server where I could access mbz zipped files with current backups in them.
I think this bug needs to be addressed. Not sure if a tracker issue was issued for this problem.