To the extent that the provisions of this UDO are the same in substance as the previously adopted provisions that they replace in the zoning ordinances, they shall be considered as continuations thereof and not as new enactments unless otherwise specifically provided. In particular, a situation that did not constitute a lawful, non-conforming situation under the previously adopted zoning ordinance does not achieve lawful nonconforming status under this chapter merely by the repeal of the zoning ordinance.