I booked through BA using Avios and there wasn't the option to input the middle name. I called CX and they said BA would be able to add the middle name. I called Ba and they said they could not make any changes to the names. They would have to cancel and rebook and potentially lose my booking. This is not my fault and I do not want to risk losing my seat. A lot of finger pointing and nothign is done.

1) Will CX not allow me to board because the ticket doesn't match the passport?

2) What is the best way around this.