At check in I was appointed 1D, which I though was okay after the seat switching puzzle. However, I happened to mention this to a flight attendant while enjoying my pre departure champagne. She was a bit puzzled why I had been moved from the original seat, but later told me that the seat was given to Finnair Platinum and business class is full. I though that's perfectly fine and right marching order, but wondered why they had decided to move Oneworld Emerald. Maybe all other solo seats were already occupied by Finnair Platinum... I doubt Anyway, after boarding was completed, there was a no show and I was moved to 4A, which had remained empty. This was not only good for me, but also a lady and an child in seat 1H who could then have both 1D and 1H. So, all's well that ends well. Kudos to a great Finnair crew on this flight!