Beats me... in fact, FD members are darn lucky to be able to upgrade any fare on KL at least. In all other programmes that I belong to, this feature has been removed ages ago, leaving the possibility to upgrade "select" fares... Stupid, as the marginal cost is... marginal, as long as the higher-class seat wouldn't have been sold anyway. Much better for the airline, surely, that I pay for an economy seat use my miles for an upgrade to an unsold seat, and then pay economy again for my next trip instead of choosing to get it for free as an award. But I fear that, instead, the future all around is the Continental system, i.e. ridiculously inflated milage requirements *and* very low award availability....