A4 is Southern Winds. They fly mainly internal Argentina. I did recall GP and found out A4 is still valid using GP miles. But depeding on the agent you get, they don't seem to have a good handle on the number of miles needed for the trip. I "think" it depends on the normal fare for the flight. Anyway I was wrong in my first post, but that is what I was told. Lesson is, check twice -- with GP three or four times
