So is the cheapest way to get this bonus by buying a 1W RTW 4 continent ticket (this will qualify right?) or by buying separate tickets with various 1W partners?

I want to get these miles posted to my BA FFF account, does that mean I have to get all segments ticketed by BA?

BA has nothing concrete on their site and it seems that Lan Chile is saying that Central America is part of S America whereas the 1W definition is that C America is part on N America.

We should get bonus miles just for figuring what in the heck is what!