The flight had a range of flights that included:

. . . HEL - LED - HEL . . .

Once I found out our visas were invalid, we could not fly to LED. This is not just a change of date, it is a change of route technically as we dropped the flights to and from LED. If you are are very strict with the rules, this is not allowed, even for extraordinary conditions. Thus, we were given no help when it would seem to anyone who switched on their brain for a minute that it actually would cost AY less -- and they already got the credit for the award miles whether we flew it or not -- to send us on the following segment a couple of days early, but a narrow construction was what I got.