Under 2007, I used to simply export/import ConfRoom calendars into Room Mailboxes using Outlook 2007. I'm now at a site with Outlook 2010 and Exchange 2010, and trying to move on up to O365. The method I've used in the past no longer works.
I've tried changing the view and copying, but I read somewhere that doesn't keep the meeting organizer properly and it errors on me anyway with something about 'too many items open'
I tried exporting from PF's and importing, but it doesn't import into the existing calendar. It puts the calendar into a sub folder start with IPM_Subtree.
What's the best way to move these Calendars please? MS has been trying to get rid of PF's for so long now, but we really need a method of getting rid of them without getting cut off at the knees.
Thanks