(1) This chapter shall apply to an interest created after March 27, 1986, whether the interest is designated as a conservation easement or as a covenant, equitable servitude, restriction, easement or otherwise, as long as such interest complies with the provisions of this chapter.
(2) This chapter shall apply to any interest created prior to March 27, 1986, if the interest would have been enforceable had it been created after March 27, 1986, unless retroactive application would contravene the Constitution or laws of this state or the United States.
(3) This chapter shall not invalidate any interest, whether designated as a conservation or preservation easement or as a covenant, equitable servitude, restriction, easement or otherwise, that is enforceable under any other law of this state.
(4) The provisions of this chapter are cumulative and supplemental to any other provision of law.