We are currently looking into all the possibilities to shorten the terms in which course are active.
In testing it appears that, when a course is concluded via the conclude button and then is un-concluded again (e.g. by accidental concluding), the "settings" of the course is not restored as before.
For example the course is not shown on the dashboard and stays in the "previous enrollments". The designer and teacher can not edit the course and students can not participate (e.g. hand in assignments).
The course is within the active term.