Dooley, I had a similar problem with Delta last year when I flew to Africa (JNB) for a cruise, and flew home from South America (RIO).
I'm not sure about the open jaw rules, as my beginning and end points were the same. But since I was traveling to and from two different zones, I was charged full RT points each way. It was a lot of points, believe me. The same thing happened to other lct people on the same cruise.
