Weird scenario - I’ve been looking at one-way sectors in Asia Miles and have found:
HEL - SIN on Finnair
Premium Economy
Dep 1st August
Seats are available for redemption
But when I actually click on it, I get this message:
It’s the same for the HND-HEL route on 27th June.
I’ve been in touch with Cathay and they say there’s no premium economy available on Finnair from their end, only economy and business.
When I talked with Finnair, they say premium economy is available on those flights and to book through Cathay… 
So frustrating because if I could secure these flights, I’ll be able to get my family over to Europe using points in premium for the Asia-Europe leg!
Proposed itinerary for myself and my daughter is:
SYD-HND (Paid premium)
HND - HEL (Premium on points)
HEL - SIN (Premium on points)
SIN - SYD (Paid premium)
For my wife and young daughter who are leaving for Europe earlier but we are all returning together:
SYD-HKG (Paid Premium)
HKG - FRA (Premium on points - secured)
HEL-SIN (Premium on points)
SIN - SYD (Paid Premium)
All sectors are one-way tickets.
Anyone had this issue before??