OK, here is the situation. Have two tickets, both in economy, 1 for me, one for wife, flying Auckland-Amsterdam via KL on Malaysian.

Because the wife is pregnant, we decided to buy her a business class ticket on the same flight.

So the question is, will Malaysian block the seat next to me in economy since we paid for it... but because she is now in business will they just use it for someone else if the flight is over booked??

Anyone have any insight into how this could be or will be handled?