This thread will be useful for you:
http://www.flyertalk.com/forum/showthread.php?t=22809
Generally, paid full fare business class (booked in "J") will get you 25% COS bonus on international flights and 50% COS bonus on domestic/transborder flights. If you're upgraded using certs, then you will get 25% COS bonus on domestic/transborder flights and none on international flights.