I have tried to upgrade on Staralliance with my SAS Eurobonus points at least 10 times and never been successful. I have taken extra notice to book the right booking class, I have called gold service to have them do it for me, they have confirmed that it should be possible, but it is impossible. I am convinced that SAS has stopped this. It is extremely poor that SAS does not offer this anymore and again the Staralliance rules. I have tried to contact Staralliance but not been successful.
Christian