Restore of course .mbz recover everything

Hello

Newish to Moodle, tried to search the forums for an answer with no luck. On Monday we lost all our assignment data from our Moodle MySQLdatabase, our ISP informed us that in fact the DB backups were not being done correctly, our last backup is about 3 weeks old.

My question is if we restore a courses .mbz file will it recover all supporting information, assignments, schedules, etc?

Apologies if this has already been answered elsewhere, any assistance is very much appreciated.

Thanks Hugh