The adoption of this Zoning Ordinance
shall have the force and effect of repealing all presently existing
Zoning Ordinances and regulations and amendments thereto, heretofore
adopted by the City of Watertown. This Zoning Ordinance and the repeal
of all presently existing Zoning Ordinances and regulations heretofore
in force shall not affect any act done, any right accrued or any penalty
or liability incurred or any suit, prosecution or proceeding pending
at the time this Zoning Ordinance becomes effective.