A development plan, or any part thereof, which has been given final approval, shall be so signed and certified without delay by the Borough Council. Said development plan shall be filed of record forthwith in the Office of the Recorder of Deeds of Carbon County by the applicant before any development shall take place in accordance therewith. Upon the filing of record of the development plan the zoning and subdivision regulations otherwise applicable to the land included in such plan shall cease to apply thereto. Pending completion, in accordance with the time provisions stated in Section 508 of the Pennsylvania Municipalities Planning Code, Act 247, as amended, of said Planned Residential Development, or of that part thereof, as the case may be, that has been finally approved, no modification of the provisions of said development plan, or part thereof, as finally approved, shall be made except with the consent of the landowner. Upon approval of the final plat, the developer shall record the plat in accordance with the provisions of Section 513(a) of the Pennsylvania Municipalities Planning Code, Act 247, as amended, and post financial security in accordance with Section 509 of said Act.