I am a current member in AAdvantage.

Recently I flied round trip from Sao Paulo/Brazil to London and from London to Abuja/Nigeria in British Airways.

To my surprise AAdvantage did not credit the miles from Brazil to UK, although they credit the trip between UK and Nigeria.

In all Oneworld publicity they say that you can fly any airline and have just one frequent flyer program to be credit.

AAdvantage continue to refuse the credit.

Do you recommend any attitude against Oneworld system ?

Thank you for your attention.