If, in accordance with the provisions of this chapter and the Revised Statutes of the State of New Jersey, changes in the district boundaries or other matters portrayed in the map are made by the Township Council, such changes shall be made promptly by the Engineer after the amendment has taken effect as provided by law. For each change in the map, note shall be made thereon, in the revision box, of the date of revision, zones affected by the revision and a brief identifying description of the revision. These changes are to be endorsed upon the map on the effective date of the amendment.