A. Existing signs that are nonconforming to the provisions of this chapter are permitted to continue subject to the provisions of subsection (B) of this section. Nonconforming signs may be replaced by a sign of the same type, size, dimensions and location without losing its nonconforming status. Sandwich board and temporary signs that are nonconforming are not permitted to be continued and shall be made conforming.

B. A nonconforming sign shall lose its nonconforming status it: