Originally Posted by KARFA

I wish I had said nothing now.

1. Yes for an involuntary rebook you do not get charged if the new flights are more, and get no refund if the new flights are less. But I suggested you go down the BWC route if the new flights are less which is effectively turning the booking in to a FTV and applying the value to the new flights. In that scenario you would pay any fare difference - so don't do it if the new flights are more, but you would get a refund if the new flights are less. I have actually had instances where switched on agents have pro-actively checked whether the new flights are less and done the change via BWC precisely because I then got a small refund, instead of doing it as an involuntary change.

2& 3. Ah, well, unfortunately I am not sure I can offer you any solution to that problem. As it turns out it sounds like going down the BWC wouldn't have worked anyway since the new flights were actually more costly.