On the event page for a scheduling link, for example https://mysite.com/admin/events/123456/occurrences/123456, you can't actually tell if the event has been cancelled or not. You need to click on the "View event page" link and take you to the public event page, for example https://mysite.com/events/e/123456 and that will tell you that the event has been cancelled. But you can't actually tell from the admin-side event page. Please change this so it's easy to see from the admin side that it's a cancelled event.