Mass. Gen. Laws ch. 190B § 4-206
The power of a foreign personal representative under section 4-201 or 4-205 shall be exercised only if there is no administration or application therefor pending in the commonwealth. An application or petition for local administration of the estate terminates the power of the domiciliary foreign personal representative to act under section 4-205, but the court may allow the domiciliary foreign personal representative to exercise limited powers to preserve the estate. No person who, before receiving actual notice of a pending local administration, has changed position in reliance upon the powers of a foreign personal representative shall be prejudiced by reason of the application or petition for, or grant of, local administration. The local personal representative is subject to all duties and obligations which have accrued by virtue of the exercise of the powers by the foreign personal representative and may be substituted for the foreign personal representative in any action or proceedings in the commonwealth.
Mass. Gen. Laws ch. 190B, § 4-206