62db5789_Known_Issues__Affected_Users
[Current Issue] Turnitin: If the teacher changes the max marks or grading scheme of a Turnitin assignment to which submissions have been made and graded, the total score in the corresponding Turnitin assignment will get re-calculated however the new total score is not being pushed into Moodle Grades. [Status] Under investigation by eSolutions. [Affected Users] 
Teaching staff who grade papers, and Students. An unlikely scenario. Staff are advised NOT to change max marks or grading scheme once submissions have already been marked.