When I check available seats for my up coming flight to Shanghai and return from Beijing, Finnair "manage my booking" shows 4 rows in the forward business class cabin and two in the rear one. Both flights are on A340. Is this just a mishap of the system or is there a A340 in the fleet which only has 4 rows in the forward cabin instead of normal 5. The old Air France plane has joined the fleet - could that one have a different configuration?