If, in accordance with the provisions of this chapter and Chapter __________, Pennsylvania Statutes, changes are made in district boundaries or other matter portrayed on the Official Zoning Map, such changes shall be made on the Official Zoning Map promptly after the amendment has been approved by the Borough Commission, together with an entry on the Official Zoning Map as follows: "On (date), by official action of the Borough Commission, the following (change) changes were made in the Official Zoning Map: (brief description of nature of change)," which entry shall be signed by the Mayor and attested by the Borough Secretary. The amending ordinance shall provide that such changes or amendments shall not become effective until they have been duly entered upon the Official Zoning Map. No amendment to this chapter which involves matter portrayed on the Official Zoning Map shall become effective until after such change and entry has been made on said map.