It appears CX awards between HKG and NA + Asia except China/Taiwan/Japan/Korea using AS miles are purged since couple days ago. There's a few Y for NA and plenty of J/PE/Y to Southeast Asia countries (Indonesia, Malaysia, Philippines, Singapore, Thailand & Vietnam) before the purge. Using AA miles, Y is still available but all PE/J are gone. BA miles still see J/PE/Y but I didn't try to book it.