I have sent Cathay ticketing office a letter on this and requesting a refund on the 11.1% increase imposed on my 4x DONE4, on the grounds that their published rules do make provision for changes to 1st sectors without the need to recalculate the fare.

I anticipate a protracted exchange of correspondence but it will be interesting to see what their initial explanation will be, even if it is predictable.

Still waiting to hear from oneworld4u

**CX have, on reissuing the tickets, reissued on paper with the explanation that their systems cannot reissue etickets on *one* - simply amazing**