If I go to the : Grades Edit > Course Settings page (grade/edit/settings/index.php)
and if I choose a number of "non-default" settings there: (See BEFORE image)

and then I created a full course backup and restore this course content into an existing (empty) course, deleting it first, the new version of the course does not bring in the non-default settings into the gradebook: (See AFTER image) - they all revert to default.

Shouldn't the backup/restore process, especially when restoring to an "existing course, deleting it first" assume that we want all settings to transfer over into the course so we don't have to go check and reset all these settings if they are not defaults?