project: The number of low-income and very low-income units and the configuration (i.e., bedroom size) provided by the transferring project shall be no less than when transferred to the receiving project or projects and the net dollar amount of Federal assistance provided to the transferring project shall remain the same in the receiving project or projects. (B) For unoccupied units in the transferring project: The Secretary may authorize a reduction in the number of dwelling units in the receiving project or projects to allow for a reconfiguration of bedroom sizes to meet current market demands, as determined by the Secretary and provided there is no increase in the project-based assistance budget authority. (2) The transferring project shall, as determined by the Secretary, be either physically obsolete or economically nonviable. (3) The receiving project or projects shall meet or exceed applicable physical standards established by the Secretary. (4) The owner or mortgagor of the transferring project shall notify and consult with the tenants residing in the transferring project and provide a certification of approval by all appropriate local governmental officials. (5) The tenants of the transferring project who remain eligible for assistance to be provided by the receiving project or projects shall not be required to vacate their units in the transferring project or projects until new units in the receiving project are available for occupancy. (6) The Secretary determines that this transfer is in the best interest of the tenants. (7) If either the transferring project or the receiving project or projects meets the condition specified in subsection (d)(2)(A), any lien on the receiving project resulting from additional financing obtained by the owner shall be subordinate to any FHA-insured mortgage lien transferred to, or placed on, such project by the Secretary, except that the Secretary may waive this requirement upon determination that such a waiver is necessary to facilitate the financing of acquisition,