Where after the effective date of the Municipalities Planning Code a curative amendment proposal is approved by the grant of a curative amendment application by the Board of Commissioners pursuant to Section 909.1(b)(4) of the Municipalities Planning Code
or a validity challenge is sustained by the Zoning Hearing Board pursuant to Section 909.1(a)(1) of the Municipalities Planning Code
or the court acts finally on appeal from denial of a curative amendment proposal or a validity challenge, and the proposal or challenge so approved requires a further application for subdivision or land development, the developer shall have two years from the date of such approval to file an application for preliminary or tentative approval pursuant to Article
V or
VII of the Municipalities Planning Code. Within the two-year period, no subsequent change or amendment in the zoning, subdivision or other governing ordinance or plan shall be applied in any manner which adversely affects the rights of the applicant as granted in the curative amendment or the sustained validity challenge. Upon the filing of the preliminary or tentative plan, the provisions of Section 508(4) of the Municipalities Planning Code
shall apply. Where the proposal appended to the curative amendment application or the validity challenge is approved but does not require further application under any subdivision or land development ordinance, the developer shall have one year within which to file for a building permit. Within the one-year period, no subsequent change or amendment in the zoning, subdivision or other governing ordinance or plan shall be applied in any manner which adversely affects the rights of the applicants granted in the curative amendment or the sustained validity challenge. During these protected periods, the court shall retain or assume jurisdiction for the purpose of awarding such supplemental relief as may be necessary.