How about if you do LHR-NYC and then NYC-LAX on AA? Then you give up half of your miles on your AA account.
I can't help you as I also have other ONEWORLD partner FF programmes, therefore no bonus miles on any BA sector. I'd credit the transatlantic flight to an account other than AA, and credit the rest on AAdvantage.
I prefer any international F class over AA's. So it's not a 'point' issue only.
[This message has been edited by Guy Betsy (edited 01-06-2002).]