 NEW YORK--BUSINESS WIRE--BlackRock Advisors, LLC announced today that the Boards of DirectorsTrustees of BlackRock MuniHoldings Investment Quality Fund NYSE: MFL and BlackRock Muni Intermediate Duration Fund, Inc. to be renamed BlackRock Municipal Income Fund, Inc. effective October 1, 2021 NYSE: MUI together, the Funds have approved the reorganization of MFL with and into MUI, with MUI continuing as the surviving Fund the Reorganization. It is currently expected that the Reo 