Rudi,
It's written on LH's Japan homepage (in Japanese)
http://www.lufthansa.co.jp
'100% miles are credited even when you travel on group travel tickets or normal discount tickets.'
*2
*2 says: 'IT fares on NH earns 50%.'
I just noticed that this nota bene also says: '
Excluding G/N/Q/X fares on SQ' -- the same as UA MP, I think.
Those 'IT' fare tickets are very widely sold in Japan. They are 'the' synonym for discount tickets here. I'm not familiar with NH tickets marketed in Europe but I guess the lowest fare class NH is selling there is 'B' like they do in other Asian markets outside Japan.