Mealey's (April 4, 2018, 3:02 PM EDT) -- BOSTON — In a reinsurance treaty dispute over environmental claims, a group of insurance syndicates in a March 23 motion seek an order from a Massachusetts federal court enjoining an insurer from filing a duplicative arbitration demand (Certain Underwriters at Lloyd’s, London v. Transport Insurance Co., No. 17-10618, D. Mass.)....