( August 7, 2025, 11:33 AM EDT) -- CINCINNATI — Deciding a dispute it said involves “a matter of first impression,” the Sixth Circuit U.S. Court of Appeals on Aug. 6 affirmed a ruling that upheld both an arbitrator’s conclusion that an actuary’s withdrawal liability estimate violated the Employee Retirement Income Security Act because it was not his “best estimate” and the arbitrator’s remedy, then declined to award attorney fees for the appeal....