Hi we are running a 3300 on mcd 4.2 and last night after giving the receptionist instructions to change the auto attendant greeting via the 9999 mailbox, I noticed that all mailboxes are missing this morning and 9999 has been changed to 99. any ideas what has happened here and how to switch back to a 4 digit plan? When trying to readd mailboxes it only lets you add 2 digit mailboxes.