Am having a problem using this recommended method when trying to get award availability SIN-LAX on CX. It gives an error response "Date Out of Range" when checking more than 322 days in advance. However, if I check point to point (SIN-HKG and HKG-LAX) it does show availability 330 days out. Unfortunately, CX has paired flights where it opens up more availability for connecting passengers so point to point availability doesn't help me.

Is this a known problem?