I forgot about the rule change for SWP origination (I no longer originate from there), that was made about a year ago and it was done to allow SA to Africa access. This rule allows a "southern hemisphere" RTW of Australia - Africa - South America (but they still require 4 continents minimum for SWP, so no advantage over flying SA to Europe to Africa in terms of cost, but does allow choice of Europe or Asia on the xONE4).

Years ago PPT was classified as part of South America (perhaps because the only OW service to it was from SA) ... I tried to get a transpacific routing via PPT and it was not allowed a few years ago (haven't tried since, not that interested in PPT).