According to KE website 'News' section, KE is changing some of their booking classes ...
Link to KE News
For example, class 'Z' being replace by class 'I' with effect from 1 March.
'I' used to be economy class but being shifted to business class.
Flying Blue still shows 'I' as economy, and I have a flight coming up on 3 March that is in 'I' class.
Will Flying Blue still honour the old 'Z' fares for 125% miles (instead of the current 'I' 100% miles) ?