CumulusMX does a daily backup of all the current data and .ini files at midnight rollover, and saves the last 10 backups. Check the CumulusMX\backup folder.
It also does a same backup each time Cumulus is stopped, again saving the last 10.
The \CumulusMX\Records are not included in those backups.
As these backups are not beyond 10 days you should also do your own regular backup of your files and folders.
Enjoy,
Paul