Sumatra Development leads the field of migrating entire calendar servers to Exchange. We migrate Oracle Calendar Server, Oracle Beehive, Apple iCalendar, and Zimbra to Microsoft Exchange keeping all meeting information and resource bookings intact. We migrate calendars server-to-server between Exchange and Office 365 while keeping meetings live and doing incremental syncs quicker than any other solution.
You know how it is -- you've had your legacy system for YEARS and sometime in there you changed domains from say OLDCOMPANY.com to NEWCOMPANY.com or something like that.
And now as you are migrating into Office 365 you wonder if you can take all that over and have it work in calendars the way it used to.
Have no fear -- you can do that. Just put both in as in the screen shot on your configuration page.
