1: Setup a backup run (File→Backup/Restore)
2: Start the backup
3: Cancel the backup
4: Go back to the Backup dialogue
5: The backup settings are all unchecked, as would be expected IF the backup had completed
6: Settings can be changed IF the date is changed. However the user needs to remember either what the previous backup date was or where the previous backup file is located (assuming s/he has not changed the filename of course!)

If a backup run is cancelled, the previous check-box settings and date should be restored to the Backup dialogue box.