Hi @ThomasKaiser
Welcome to the Canvas Community.
We are coming from many different schools with many different types of Canvas configurations and integrations, so I'm afraid "rollover" means something different at each school as far as Canvas is concerned.
At my school, for instance, "rollover" is something that happens on the Student Information System side, when we begin pushing out data for the upcoming semester. However, we create new Canvas course shells for each course section each semester, so that doesn't have much impact on existing courses in Canvas except that the term that they are associated with becomes a "past enrollment" rather than a "current enrollment" and moves from the Dashboard to the "All Courses" list for users.
However, I know that some schools re-use course shells from semester to semester.
Without knowing how your courses and enrollments are created and managed in Canvas, it's hard for us to know what "rollover" means on your system. What can you tell us about the integration with your Student Information System, and how courses and enrollments are created and managed?