Outlook 2010, Exchange 2007.
What I really want is to move just the calendar items from the former employee to the new employee's calendar. I first used add-mailboxpermission and opened things up to me (Administrator). Then I tried
Export-Mailbox -Identity email@example.com -Target Mailbox firstname.lastname@example.org -TargetFolder "\Calendar" -BadItemLimit 40 -IncludeFolders '\Calendar'
I get an error about the calendar being a special file, can't do that, etc. So I created a new Calendar in the User's Outlook and tried to specify that Target Folder "\New Calendar" and it does not error me out. It appeared to work. I saw reminders pop up so I thought I had it, but there are no entries in the "new" calendar.
I really just want to move the calendar items to the new user's primary calendar. I could use some Exchange Wizard help. Thanks