This happens to me all the time flying with LH. Although my boarding pass is clearly CO One Pass, LH will credit the miles to Miles and More. I will then e-mail Miles and More and request that the miles be redirected to CO One Pass. In about five days the miles will appear in my One Pass account. LH does not remove the miles from the Miles and More account. So I get miles credited to both accounts. To avoid this in the future, I will not sign in with LH when I make reservations. Then there is no reference to my Miles and More account number.