[LON-CAPA-users] option to re-evaluate answers

[johansson]

Hi,

Is there any option to re-evaluate course-participants’ answers?
This options could be helpful, if the unfortunate case happens that a
correct solution was entered incorrectly in the exercise description.
(incorrect answer by author in the problem description)
If the problem with the correct solution is republished, only new
course-participants’ answers were evaluated with respect to the new-
correct answers, the older (correct) ones are signed to "incorrect". Is
there any way to reevaluate all answers manually to get the correctness
of answers of all course-participants?

Thanks for answers

Thoralf