Ginnie Mae has changed certain office names to reflect the activities and responsibilities of the office more accurately. For example, the Office of Mortgage-Backed Securities is now known as the Office of Issuer and Portfolio Management. The Office of Program Operations name also has been discarded in favor of the Office of Securities Operations. The MBS Guide, including the summary of addresses and all forms and appendices, has been updated to reflect the office name changes. In addition, the address for overnight delivery of new MBS issuer applications ...