A backup using IMS CC doesn't deal with Assignments at all--they are simply omitted.

In CC 1.2 you can flag any resource item as being for the 'assignment' purpose. But no additional meta-data is possible. So, consider thus creating an HTML file from each Assignment.

Expected: Moodle Assignments are somehow included in the resulting IMS CC package. For example, as new HTML files linked/referenced by the IMS CC organization items.
Actual: Moodle Assignments are simply omitted.