Where a lot was recorded prior to October 1, 1978, and was subject to recorded restrictive covenants containing building setback lines, side and/or rear yard lines, or has such lines shown on the recorded plat, such lot shall be allowed to adhere to such lines. Waivers to restrictive covenants pertaining to building setback lines, side and/or rear yard lines, granted by Sky Bryce Association for Sections I through XII of the Bryce Mountain Development, shall be accepted by the Zoning Administrator.