Scenario: A faculty member remembers recording two sets of scores in the Canvas grade book for a class of 15 students one day last week. This week, one of those two grade columns only shows 13 scores while the other column still shows 15 scores. This instructor is convinced that Canvas deleted two scores for two students in the grade book. After looking in the grade history from within the course's grade book, and also looking in the Admin Tools > Grade Change Log, I can only see 13 scores recorded for the assignment with the missing scores.
Question: Has anyone else ever encountered anything similar where Canvas lost grades from the grade book and also did not show evidence of deleted or changed grades in the grade history or grade change log?