All laws and parts of laws, general, local, or special, relating to or affecting the city, its powers, functions, duties, and property, in force when this chapter shall take effect, are hereby continued in effect; but all such laws relating to the exercise of the powers, functions, and duties of the commission or some other form of government, shall be superseded to the extent that the same are inconsistent with the provisions of this chapter, and all laws or parts of laws which conflict with this chapter are hereby repealed. This chapter does not repeal Chapter 44B of this title, which provides a different form of mayor-council government for a Class 4 municipality.