Courses and course formats

Sorry, re-opening an old thread, as it is related to the same topic.

I just added one cohort sync method and enrolled the students in the course, now later I  removed the cohort sync method from the course, so as per the documentation when we remove the cohort sync method from a course it unenrols all the users of that cohort correct?

In course completion criteria, I have selected the condition 'Unenrolment' i.e. when a user gets unenrolled from a course the completion should mark as done. But it is not working.

My question is, Does the unrolment condition in course completion settings, only works with manual unrolment?

Regards
Jaswant