( February 11, 2025, 7:58 AM EST) -- BOSTON — In a two-page judgment, a First Circuit U.S. Court of Appeals panel affirmed a ruling for a multiemployer pension fund in a dispute concerning unpaid withdrawal liability, deeming “unpersuasive” the withdrawn employer’s contentions that it didn’t waive an exemption argument and that a demand letter constituted a violation of a bankruptcy stay....