(October 7, 2015, 11:15 AM EDT) -- ST. LOUIS — A health plan provider and four of its excess insurers debate in briefs before the Eighth Circuit U.S. Court of Appeals whether a global settlement fund of underlying lawsuits requires allocation before the insured can seek reimbursement from its insurers (United Health Group Inc. v. Executive Risk Specialty Insurance Co., et al., No. 15-1076, 8th Cir.)....