Changes in the ways that cross-listed courses and combined sections are displayed in Blackboard rolled out on March 6. Until recently, instructors combined sites (e.g. C001) or a cross-listed sites (e.g. X495), but not both. If you have multiple sections of a cross-listed course, you now have the option to choose between a combined site or a cross-listed site; both will be generated in Blackboard. More details here on combined and cross-listed sites