New York Laws
Article 83 - Uniform Guardianship and Protective Proceedings Jurisdiction Act
83.29 - Proceedings in More Than One State.

(a) If the court in this state has jurisdiction under section 83.17 of
this article, it may proceed with the case unless a court in another
state acquires jurisdiction under provisions similar to such section
before the appointment or issuance of the order.
(b) If the court in this state does not have jurisdiction under
section 83.17 of this article, whether at the time the petition is filed
or at any time before the appointment or issuance of the order, the
court shall stay the proceeding and communicate with the court in the
other state. If the court in the other state has jurisdiction, the court
in this state shall dismiss the petition unless the court in the other
state determines that the court in this state is a more appropriate
forum.