You may need to adjust the course start and end dates in your course site so that the course will appear in Dashboard Course Overview, Courses tab, under the tab you intend:
To adjust these settings
NOTE: If you cannot edit the Course end date, try the following:
Course start and end dates do not make your course site accessible to students. Students will not be able to access your site until you adjust the Course Visibility setting. The tutorial in this guide, Making the Course Visible, shows how to give your students access to the course site when you are ready.
TIP: Always use the Firefox browser