I have a flexible pace math course where students move at their own speed and take quizzes when they are ready for them. I want to import grades for quizzes taken over a week. The first import if fine but in the second import, I only have the new grades that have not been entered yet so the cell in my .cvs for a kid who already took the quiz is empty. Canvas deletes that existing grade.
Is there any way for my grade imports to NOT change existing grades?