I use the Calendar Feed link from the Canvas Calendar so I can see all of the assignment due dates in my regular calendar. (That's the intent, right?) However, Canvas has started adding any courses with due dates into the feed, regardless of whether they're selected in the Canvas calendar.

This includes the sandbox shells that I use to create the course content, so I end up with entries from my live courses and the sandbox course. 

If I wait to add the due dates in the live courses, I won't see the sandbox entries. However, I have multiple sections of the same courses, and it's more expedient to add the due dates in the sandbox and copy the content to the live course than to add them multiple times in the live courses.

I've been doing this for years and never had the unselected courses show up in my calendar feed until recently.

What can I do to make the sandbox entries go away? It's making my calendar cluttered to have every assignment duplicated. 

Thanks!