<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by iwareboy:
I called Monday to check availability on HKG-BKK-SIN-HKG (Cathay has 1 BKK-SIN flight per day), and the agent was all ready to book the trip --- but I didn't book it.. I called today, and two agents both said no stopovers allowed. Any advice?</font>
Yes, unfortunately BKK and SIN are not CX hubs, just a destination stop. The aircraft that carries onward to BKK-SIN would not count as a stop over to SIN. The rules allow you the stopover in HKG (the old awards allowed HKG stopovers twice), but not at BKK if SIN is the final destination. You are also allowed a stopover at the airline's end (or beginning) destination point once in North America when you would then AA it onwards to your final/starting destination. The new rules are bad for flyers and somewhat bad for the airlines as well in the long run.
As stated by a previous user, you could buy a cheap ticket BKK-SIN and create your own itinerary as a stopover. Recommend you place the award on a 14 day hold status when you know you have your paid flight secured.