If a quiz has already been administered, and student data is in place, then the "Assign" fields "Assign to" assigned dates are accidentally deleted, does the test data get deleted as well? (It looks that way.) #quiz data deleted #Assign quiz
Was it actually the dates that were deleted, or the names/groups of students it was assigned to? I have a quiz that was assigned like this:
Students took the quiz and then I deleted the Due, Available From and Until dates in the quiz settings. But the student submissions and grades for the quiz were still visible. I then deleted two of the student names from the Assign To box and I could no longer see their submissions or grades. But when I edited the quiz again and put those two student names back in the Assign To box, their submission data was visible again.
I'm not sure if this is exactly what you were asking but I hope it's helpful.
Retrieving data ...