Booked LAX-ZRH (V class) and asked to be waitlisted for upgrade to BF. 20,000 miles was deducted at that time. Today, I received an email that the segment from EWR-ZRH has been upgraded and my credit card charged $400, however, the LAX-EWR segment is still only waitlisted. If the LAX-EWR upgrade never clears, can I get a refund of the $400 & 20,000 miles if I'm willing to move back to coach for the EWR-ZRH segment? If so, what would be the deadline for doing that?