I think what you saw concerning the Columbia District Court filing dated Aug 31, 2016 was in reaction to the DBNT_JPM_FDIC Settlement from Aug 19, 2016, that has to be judicial approved in Cal.:
"The DBNT_JPM_FDIC Settlement remains subject to judicial approval in a procedure to be filed by DBNT in California, and, if approved, will result in the dismissal of the four WAMU-related actions pending in the U.S.District Court of Columbia and the appeal pending in the U.S. Court of Appeals for the District of Columbia Circuit."