It is intended that the Planning Commission shall serve in an advisory capacity to the Council. Any Planning Commission shall operate as though established under the provisions of the Code of West Virginia, Chapter 8, Article 24, as amended. All actions lawfully taken by prior commissions and boards are validated and continued in effect until amended or repealed by action taken under the authority of said Article. The membership of existing commissions and boards shall continue until changed by law or vote of a majority of all the members of Council.