The new grader is not persisting rubric evaluations.

Add the Rubrics tool to your Sakai site Create a rubric, just the default options are fine. Create an assignment and associate it with that rubric. You have to select the points grade option to do this. In Assignments, make sure you're using the new Sakai Grader by checking the box in Assignments -> Options. Click on the grade link for the assignment. Click on any student. You should see the rubric grid icon next to the points entry box. Click on it and select some rating cells. The points should change accordingly. Click Done on the rubric dialog. Now  Save the grading. Refresh your browser. Click on the same student to grade them. Click on the rubric icon. You should see your ratings still there.