1.  Interest created after effective date.  This chapter applies to any interest that complies with this chapter created after the effective date of this chapter, whether designated as an affordable housing covenant or an equitable servitude, restriction easement or other interest.  

2.  Affordable housing covenant created before effective date.  This chapter applies to any affordable housing covenant created before the effective date of this chapter if the affordable housing covenant would have been enforceable had it been created after the effective date of this chapter, unless retroactive application contravenes the Constitution of Maine or the United States Constitution.  

3.  Chapter does not invalidate interest.  This chapter does not invalidate any interest, whether designated as an affordable housing covenant or an equitable servitude, restriction, easement or other interest, that is enforceable under other laws of this State.