In a move that could potentially prolong already protracted litigation, a U.S. District Court judge in New York ruled last week that a proposed $8.5 billion settlement over Bank of America’s non-agency mortgage-backed securities belongs in federal and not state court.Judge William Pauley denied a motion by the Bank of New York Mellon to move the lawsuit filed by BofA Countrywide non-agency MBS investors back to New York State Supreme Court. Eleven entities sharing the name Walnut Place petitioned for the federal court venue, claiming the case’s size and complexity qualified it for a “mass action.” Judge Pauley agreed.