There will be times when instructors will not immediately see the courses they are teaching for the upcoming semester in Blackboard.
If you as an instructor can log into Blackboard, it can take up to 30hrs from the time you are placed as the instructor in Colleague till you see the course. By default, if the course has been created in Blackboard and you are assigned in Colleague, you are enrolled automatically within 60 days of the start date.