I have a ff award business class seat (IAD-JNB) that I got via Delta last year on SAA (as most of you know, they are no longer partners). The plane does not have a first class, only business and econ and my booking class is listed as "I".
Now I'm trying to see how to get another business class SAA ticket without paying full price. We don't have a lot of Voyager miles and it appears they won't use other * miles for upgrades. We have a lot of AE miles though.