I changed a weekly repeating event for one specific week through Noteplan on Mac. When I viewed the event later on my phone/watch, the original event appears as a daily repeating event. I don't know if it's a mix of using mobile and phone, some cache issues somewhere, or something else, but this is a fairly common use case for me. I don't have time to test it all but this is what I was able to do to reproduce. Steps to reproduce: Create a weekly repeating event in Apple Calendar (Created on a Mac, used iCloud calendar) Pick one week to make a change just for that week (Noteplan for Mac) View the original repeating event and single changed event in iOS Calendar app, iOS Noteplan, Mac Noteplan and Mac Calendar Expect: all apps should show the change for just that week and the original repeating event every week except the changed event Actual: Mac noteplan show the change for just that week, no repeat on that day and the original repeating event is gone Mac calendar shows a daily repeating event and the original repeating event is gone iOS noteplan and iOS calendar shows the change for just that week, plus the original repeating event now repeats daily except the changed event as expected I have some screenshots but I'm not able to attach them for some reason. Can share them elsewhere or try to attach later if it's possible.