Originally Posted by ernestnywang

I suggest that you ask CX reservation to remove your MPO number from KUL-HKG-JFK in advance. You can also try to remove it at the airport when you check-in for the return segments, but there have been some reports saying that the points and miles still get posted, so it is better to simply remove it from the PNR to begin with. If you have the physical GO card with you, you should be able to use J class check-in and enter the lounges. On the other hand, you would not be greeted and recognised as GO on board.