Originally Posted by PanAmWT

I have an April expiring FFC (or "XFC": the FFC from cancelling an unused ticket), I used it to book a ticket, then tried to change the outboud flight. There was no way to change it to a future date beyong the expiration day. All days after the April expiration date in the departing clendar were grayed out.
in a sepate situation the GS agent helped me to consolidate two XFCs to buy a ticket that is cheaper than the combined value. The small balace was refunded in a ETC that could be used by others in my family, but the expiration date remained the same April date in the origianl FFC.