This is an Exchange 2007 organization, which was migrated from Exchange 2003; when the last Exchange 2003 server was removed, nobody bothered moving the public folder hierarchy object from the default "First Administrative Group" to the new "Exchange Administrative Group (FYDIBOHF23SPDLT)", which is ordinarily done from an Exchange 2003 server's administrative console before removing it. Now Exchange 2003 is gone, and I can't find any utility that can perform this move.
How can this be done when there are no more Exchange 2003 servers in the organization?