When grading resubmissions using a rubric, I thought it was keeping the original rubric with score & comments and providing me a "fresh" rubric populated with the previous submission's scores & comments so I could update from there. Doing this, I deleted a comment that no longer applied because the student fixed the error and gave a new score. I was then surprised when I went back to the original submission using the pull-down and saw that the old score was there but not the old rubric. I appear to have overwritten it. Am I just not doing it right? Can I get it to keep the old rubric & comments, using a new rubric for the new submission? (I wanted to review the old comment but it was gone.) Thank you!