D-PHYS Calendar (SOGo) - Migration from eGroupware
You can export your existing calender entries in eGroupware and import them into SOGo.
Export your calendar data from eGroupware
In the 'Selection' tab, choose the time range you want to export. Make sure to set the end date sufficiently late to catch all upcoming events. Choose the calendar you want to export. Click 'Export' and download the file.