**EDIT**  Sorry, everyone.  I found out an answer right after I posted this message.  The two courses that were showing up did not have the enrollment deadline added.  

We imported users from our old LMS to Docebo last year.  The ones who were imported no longer are assigned to a session.  The issue is that now those users have an "enroll" dropdown next to the course they've already taken.  We do not have the self-enrollment feature checked and there are no other settings I can see that should allow users to enroll themselves in a new session.   Is there any way to prevent this?  We have tried enrolling these users into a "test” session, but they still have the option to enroll in a different session in their portal.   Because they have already completed this course, we do not want them to have the option to re-enroll in a different session.