Nothing in this article may impair the continued and entire effectiveness of any ordinance, order, regulation, resolution, adoption, certification, decision, determination, plan, map, plat, or other action duly and validly enacted, adopted, made, or taken by the County Commissioners or district council of Prince George's County, or by the County Council or district council of Montgomery County, or by the Commission, or by the board of zoning appeals of Prince George's County, or by the county board of appeals of Montgomery County, or by any other body or official under the authority of any law previously repealed, prior to the effective date of the repeal, unless the ordinance, order, regulation, resolution, adoption, certification, decision, determination, plan, map, plat, or other action may be amended, repealed, revoked, or otherwise changed under and in accordance with the provisions of this article. Nothing contained in this article may be deemed or construed to validate, ratify, legalize, or make conforming any building, structure, or use which was, is, or may hereafter be unlawful or prohibited under the provisions of any ordinance, order, regulation, resolution, adoption, certification, decision, determination, plan, map, plat, or other action enacted, adopted, made, or taken by the County Council or district council of Montgomery County or by the County Commissioners or district council of Prince George's County, or by the Commission, or by the board of zoning appeals of Prince George's County, or by the county board of appeals of Montgomery County, or by any other body or official under the authority of any law previously repealed, previous to the time the repeal took effect.