Thanks!

I'm just trying to add in some further flights in North America before flying back to the UK. It all meets with the 'rules', as long as they can get me the flights. The real problem is just the disorganisation at BA's end – nobody who can deal with RTW bookings seems allowed to face the public, so we're just going through a third party (the front line phone people) who have barely heard of Oneworld Explorer, never mind knowing how to handle it. The call handler who took my call today admitted as such when I demanded (politely) to talk to somebody who deals with RTW bookings – "they're all in our back room team so aren't able to talk to you".

Having done everything through BA so far, I assumed I'd have to continue that, even though the extra flights I want will be with AA.