Scheduling and managing events using Outlook.com calendar
AJ, when I just now tested Windows Mail and Calendar it converted an Appointment into a Meetings after I edited with my iPhone. When I use my iPhone to edit an Appointment, my temporary Workaround is using Outlook Desktop app to delete and re-create the Appointment when I get back to my computer. Today I used the Contact Support feature of Outlook Desktop App to remind Support that the problem is continuing. Windows Mail is not as fully featured as Outlook for Desktop (see link below for a comparison).
COMPARING WINDOWS MAIL AND CALENDAR TO OUTLOOK FOR DESKTOP