I'm trying to understand the workflow for sending and accepting a calendar event invitation on ownCloud 9.1.
User A creates an event, and types User B's e-mail address as an invitee. An invitation is sent.
User B accepts the event. At this point, the event is shown in User B's Contact Birthdays (!) calendar, and can't be changed to any other.
Why is the event placed into the Contact Birthdays calendar? (It's shown in that calendar both in the web interface and via CalDAV.)