<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by DFW DL:
OK, maybe I've missed something. How is this possible? Last I knew PMUs and mileage upgrades weren't valid except on DL-operated flights.</font>
You can upgrade AF flights with partner miles and you can upgrade tran-Atlantic AF metal on a DL code with a PMU or DL mileage.