When I was a young naive Moodler, I created a cohort in the context main administration page. I now know that it's better to create one in the course category in which the tests dwell, and save the global cohorts for the main administration page.
Supposing I created a cohort in the main administration page, when it really belongs in the course categories; is it possible for me to move it there without deleting the grades of anyone within that cohort?