Originally Posted by
mouseroyal
Thank you for your help! I read some frequent flyer blogs and they all said that any changes to a BA mileage redemption other than data/time will have to have the ticket cancelled and re-issued.
Cancelling/reissuing the ticket and cancelling the reservations are two different things. It may be possible for them to cancel the ticket while keeping the Hawaii segments and then just add on the domestic US segments, and then re-issue a new ticket. But you'd certainly have to call and talk to a (BA) agent.