2 ways:
> If refaring I'll use the chat line but CVP'd do it as well. I keep promos, ezair, shareholder obc, excursions, and add-ons as well as current booking #.
> if rebooking because fare only applies to new bookings (this is becoming more common): I call my CVP to make sure that everything is lifted and shifted over so I don't lose anything in the process (ie: fare only applying to new bookings). I will lose previous promo but usually get a little OBC (although often less than before). Others use 1800Princess or their TA. I've never been able to do this on chat as it requires 2 bookings / same room until completed / guess it's complicated bc they need to also contact EZAIR & manually transfer everything
So I call her and say something like: " hi ××! I see that ×××× dropped in price can you adjust it? "