I use Hope Calendar and it shows entries I have deleted from Mail and Calendar. So does Cortana. This clogs up my calendar, obviously, and also leads to duplicates (screenshots included). Clearly when I delete an entry from Mail and Calendar it isn't really gone. Does anyone know of a way to flush/reset the sync, so that Cortana and third party calendars work properly? (Note, second image borrowed from another thread, figured no one would mind.)
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