Enforceable interests.

A. Nothing in the Cultural Properties Preservation Easement Act invalidates any interest, whether designated as a cultural properties preservation easement, covenant, equitable servitude, restriction or easement that is enforceable under the laws of this state. B. No interest benefiting or encumbering real property cognizable under the statutes or common law in effect in this state prior to the enactment of the Cultural Properties Preservation Easement Act, nor any application or permit for a change of a point of diversion place or purpose of use of a water right at any time shall be impaired, invalidated or in any way adversely affected by reason of any provision of that act. C. Nothing in the Cultural Properties Preservation Easement Act shall be construed to diminish or impair the rights of any person authorized by the laws of this state to acquire rights of way, easements of other property rights through the exercise of eminent domain. Nothing in that act shall be construed to authorize any charitable corporation, association or trust to acquire a preservation restriction through the exercise of eminent domain.