As ft101 mentioned, discussed in the other thread. My understanding is it was previously ordered first by status, then fare type, now it will be the other way around, not necessarily by the nominal value of the fare paid, but the type.
E.g. before it might have been
Plat Flex Plus
Plat Flex
Gold Flex
Gold Saver
Gold Saver
Silver Flex Plus
Silver Saver
Silver Saver
and now it would be
Plat Flex Plus
Silver Flex Plus
Plat Flex
Gold Flex
Gold Saver
Gold Saver
Silver Saver
Silver Saver