[Formal Testacy Proceedings; Will Construction; Effect of Final Order in Another Jurisdiction.]\nA final order of a court of another state determining testacy, the validity or construction of a will, made in a proceeding involving notice to and an opportunity for contest by all interested persons shall be accepted as determinative by the courts of the commonwealth if it includes, or is based upon, a finding that the decedent was domiciled at death in the state where the order was made.
Massachusetts Legal Code