In the absence of a finding of a contrary intention, the rules of construction in this part 6 control the construction of a will. In the absence of a finding of a contrary intention, the provisions of sections 15-11-603 and 15-11-604 shall apply to wills and codicils executed or republished or reaffirmed on or after July 1, 1995, and prior law (sections 15-11-605 and 15-11-606) shall apply to wills and codicils executed prior to July 1, 1995, and not republished or reaffirmed on or after that date. In the process of determining whether a contrary intention exists, the rules of construction of this part 6 shall not apply.