DL has introduced W-class on flights operated by AF for fares to be seated in the premium economy section, thus this can be a pretty expensive class. W-class is not listed in the earnings table for DL on the OK Plus pages so I sent a mail to them asking how many miles are earned. The answer I got was that I should look on the AF-page and there see that W earns 200%. So I sent another letter back asking them if they are sure. Their second answer was that they had been wrong and that they have had many requests regarding this booking class, but at the moment it is not eligible for any earnings! Does anyone here have any experience crediting DL W-class to OK Plus?