The current "owner" has released this:
Miles & More ends its cooperation with bmi
11.04.2012
With effect from 19 April 2012, Miles & More’s cooperation with bmi will end by mutual agreement. This is the result of the sale of bmi to IAG and the consequent withdrawal of bmi from the Lufthansa Group.
As of that date earning miles on bmi flights will unfortunately no longer be possible. Until then the current terms shall apply.
Miles & More flight awards issued prior to this date can be used as planned on bmi flights.
Status-related benefits on bmi flights can still be used until 31 May 2012.
If you have any additional questions, please contact your Miles & More Service Center.