Non-matching mailboxes
are those that do not have an extension number on the local MERLIN MAGIX system.
Select Keep if you want to keep original and revised mailbox and transfer-only
programming. For example, select Keep if you want to keep extension programming
for remote users in a centralized voice messaging arrangement. Select Delete if
you only want to keep Mailbox and Transfer-Only programming that has been revised.
Regardless of whether you choose Keep or Delete, all Automated Attendant, Fax,
and Guest Mailbox programming is left unchanged.