Open-xchange 7.8 supported the setting 'imipForInternalUsers=true' in notification.properties. This always attached ics to appointment mails and helped a lot because some of our users use MS exchange and some use ox caldav.

Is this setting now unsupported with ox 7.10 ? Or is there a replacement that leads to the same behavior to always attach ics ?
/opt/open-xchange/sbin/showconfigdocu -s imip does not show anything related.