<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by cesco.g:
I am holding a CRTWSTAR1, originated in Europe of which I flew the transatlantic segments, ticketed to fly to Asia and then return to EU. Business might require me now to via Australia to Asia. Can I still buy up to a STAR2 / 3 ?</font>
As you've travelled your first intercontinental segment, then yes, you can upgrade to a STAR2 or STAR3. The difference will be that between the STAR1 and whichever of the other two you upgrade to in the currency/country of origin fares, plus a USD75.00 reissue fee.
Cheers.