If we have journaling enabled to send one copy to external destination. User A has changed the internet address in person document , When User B sends an email to User A (Notes hierarchy name), it is sent to User A's old Internet address while sending one copy to journal destination.
It is because Local address Book of user B notes client has a record of "User A"'s old internet address.
When sending one copy to journal destination , mail has been sent to User'A old internet address.
So requesting for new feature or settings on Domino server end , which will convert the updated internet address at router level while sending an email to external destination for journaling.