Originally Posted by
larryflyer
<pedant>
Correct that part-cash part-miles does not earn any tier points. But MFU (which some might consider to be another sub-category of 'reward flight') DOES earn tier points (and miles) at the rate appropriate to the original cabin (before the MFU takes effect).
</pedant>
So if I book ET and use MFU to upgrade to CE, I still earn ET miles and tier points?