The relevant page on Miles and More website clearly shows Y class earns miles, J/C/D
classes do not.
http://www.miles-and-more.com/online...l=en&cid=18002
I would assume that the chart was published at a time when 06 did not have business
class, and was never updated. Is business class a recent additioin to 06?
Edit - just googled it, and 06 just aquired its A330's in June of this year, which are the first and only aircraft on which
they offer business class. So yes, my assumption above is correct.