Originally Posted by
NicolasPARMADff
It depends... If you book "blue class" (inflexible Eco reward) then you'd loose both the points and fees (though not all taxes as required by law, the amount of taxes to be refund will depend on the country where you booked from and the mood of the agent processing your request).
"Blue class" is now refundable with the switch to Avios.
There should be a 25 euro charge for award flight cancellations. I'm pretty sure there is no charge to change the dates on flights in "flexible" and "business", but I haven't tried that under the new rules.