The version 6.1 M1 attempts importing settings from 5.5 instead of 6.0.
Reassigning to "core".
*** This issue has been marked as a duplicate of 125720 ***
Lukasi, are you sure it's duplicate of issue #125720?
no, thanks, a mistake
closing as duplicate again. The problem was reported in issue 126015
*** This issue has been marked as a duplicate of 126015 ***