All LAN business class redemptions are incorrectly entered as First Class instead of Business Class, leading to an error if you select them...
Not the biggest gripe in the world.
I found award availability on CX (SIN-HKG-AMS) but - as normal - it went wrong during the payment process.
I then booked the exact same flights separately (SIN-HKG and HKG-AMS) and it all went fine. Of course annoying because if I have to cancel I will now have to pay twice. Seems a long standing problem and should be fixable.
Again: not the biggest problem on the planet, but worth looking into.