All ordinances, resolutions, rules and regulations of the City of Fort Worth heretofore ordained, passed or enacted that are in force at the time this Charter becomes effective, and which are not in conflict therewith, shall remain in full force and vigor, until altered, amended or repealed by the City Council after this Charter takes effect. Provided, that said ordinances, resolutions, rules and regulations have become in effect by the terms of the Charter under which the same were enacted, and provided, further, that the same were valid and authorized by said Charter.