Looking through Analytics page on my Canvas courses and I saw on a couple courses that they were marked as "Course Concluded" and the last student participation was on March 12th. I know for sure that students have been checking in, working on assignments, and turning things in, so this is a huge error. I'm also worried about the course being concluded affecting the student grades. I've checked the settings and it shows NO conclusion date set, yet the analytics show differently.  How do I change this?