Migrate calendars from atmail 7 to atmail suite

PROBLEM
How can I migrate my calendars from my atmail 7 installation to my atmail suite installation?

ENVIRONMENT

• atmail suite
• atmail 7 server + webmail
• atmail 7 webmail client only

CAUSE
Migration requirement.

RESOLUTION

You can migrate your calendars manually from atmail 7 into your atmail suite installation by using Apple Calendar. 

1. Setup your atmail 7 and atmail suite account within Apple Calendar.
   https://help.atmail.com/hc/en-us/articles/115014819467
2. Export a calendar’s events
   1. Click the atmail 7 calendar’s name in the calendar list.
   2. If you don’t see the calendar list on the left, choose View > Show Calendar List.
   3. Choose File > Export > Export.
   4. Choose a location, then click Export.
   5. The events are exported to a calendar (.ics) file.
3. Import events into a calendar
   1. Choose File > Import.
   2. Select the file with the events, then click Import.
   3. Choose the atmail suite calendar to add the events to.
   4. You can also drag a file with events to Calendar. The events are added to the calendar selected in the calendar list.