There's a 200% earn rate at the moment, attractive for someone (like me) who flies Z Class a lot on LH group flights. But this rate is being reduced soon for Miles and More members. My past experience is that these changes soon get passed on to other *Alliance programmes, to stop, in this case, a Miles and More member earning more by crediting his LH group flight to another FF programme. So, expect the earn-rate on LH group Z flights to come down very soon in Miles and Bonus as well.