Roles of Users
Users who were teachers will be assigned the default legacy teacher role (or non-editing teacher role) in all courses they were teacher.
Users who were students will be assigned the default student role in all courses they were student.
There will still be a single guest user with no default role at site level. For each course that allows guest access, the guest role will be assigned to the guest user for that course context. The guest control for the course will be modified from three to two options (guests always need to enter enrolment key - on/off). This setting is checked as now to force guests to enter key.