What are the Google Classroom fields that cannot be backed up SysCloud?

Some Google Classroom data cannot be backed up by SysCloud because it is either not exposed through supported Google Classroom APIs or is currently outside SysCloud’s Google Classroom backup scope.

Google Classroom data	Backup limitation
Google Classroom admin or app-level settings	Classroom admin or app-level configuration settings are not backed up.
Certain class-level UI settings	Some class details may be available for backup, but not all Classroom UI settings are exposed or supported for backup.
Stream comments and assignment comments	Comments added to posts, streams, or assignments are not backed up.
Rich-text formatting in posts, announcements, and assignments	Text content may be backed up where supported, but rich formatting applied in Classroom is not retained.
Quiz assignments as a distinct Classroom assignment type	Quiz assignments are not backed up as a separate Google Classroom quiz-assignment type.
Originality reports	Originality reports generated for assignments are not backed up.
Rubrics	Rubrics are not supported.
Calendar	Classroom calendar is not backed up by SysCloud

Google Classroom backup support depends on the data available through Google Classroom APIs and the current SysCloud backup scope. If Google expands or changes API support for any Classroom data type, SysCloud backup coverage may be updated accordingly.