Ref the posts on Flex being displayed in the Miles Breakdown when making a booking but the Fare Conditions showing Saver.
I am about to make a booking and thought I'd try to clarify this so sent off an email to EK. They told me (based on the cost of my ticket) that it was a Saver, not a Flex and they will arrange for the Miles Breakdown screen information to be corrected. It would be almost £200 extra (on a Y ticket) to book a flex fare via the call centre.
I hope that those of you that have booked these fares have screenshots, if not then get some now if you want something to argue your case with.
I have now gone back and asked which fare rules make it so, quoting from post #89 in this thread.