Neb. Rev. Stat. § 19-604: Neb. Rev. Stat. § 19-604

All valid ordinances, resolutions, orders, or other regulations of a city which adopts the city manager plan of government, or any authorized body or official of such city, existing at the time the city manager plan becomes applicable in the city, and not inconsistent with the City Manager Plan of Government Act, shall continue in full force and effect until amended, repealed, or otherwise superseded.