<font face="Verdana, Arial, Helvetica" size="2">Originally posted by GreyOwl:
do you have to use Flying Duchman points to Upgrade?</font>
They're certainly exceptionally stingy with complimentary upgrades. Furthermore, upgrades by paying with FD points are not available at check-in/boarding (but paying cash for upgrades are usually available until the last minute).
KLM should implement a policy being more generous with complimentary upgrades when available et cetera, not unlike what Platinum members of airlines in the States receive...