When I receive an appointment and klick on accept for the RSVP in the Outlook for Android app, the appointment is always written to the Outlook calendar.
1.) Even when e.g. a google calendar is defined as the default calendar in the outlook app settings, the outlook calendar is used. The default setting is ignored. No way to select a different calendar.
2.) Additionally, there is no way to move appointments from one calendar to the other.
1.) Outlook offers a selection of the available calendars to choose from during accept
2.) Alternatively, just use the default calendar from the outlook app settings