AA2009 JFK-UVF is definitely valid as it's AA metal.

Not seeing any oneworld operated flights for YVR-LAX; I suspect that you might have been looking at an AS-operated flight. Quite a few oneworld airlines codeshare on AS flights (including AA and QF) but as AS isn't a oneworld member those codeshares cannot be used.

Flights need to be both marketed and operated by oneworld carriers to be included in the xONEx.