The existing ordinances covering zoning, in their entirety, and including the maps heretofore adopted and made a part of said ordinance, are hereby superseded and amended to read as set forth herein; provided, however, that this title, including the map attached to the ordinance codified herein, shall be deemed a continuation of previous ordinances and not a new enactment, insofar as the substance or revisions of previous ordinances are included in this title, whether the same or in different language; and this title shall be interpreted upon all questions of construction relating to the tenure of officers or boards established by previous ordinances and to the questions of conforming or nonconforming uses, buildings and structures, and to questions as to the dates upon which such uses, buildings or structures became conforming or nonconforming. (Ord. 89-5, 3-1-1989)