N.Y. Fam. Ct. Act § 580-211

* § 580-211. Continuing exclusive jurisdiction to modify\nspousal-support order. (a) A tribunal of this state issuing a\nspousal-support order consistent with the law of this state has\ncontinuing, exclusive jurisdiction to modify the spousal-support order\nthroughout the existence of the support obligation.\n (b) A tribunal of this state may not modify a spousal-support order\nissued by a tribunal of another state or a foreign country having\ncontinuing, exclusive jurisdiction over that order under the law of that\nstate or foreign country.\n (c) A tribunal of this state that has continuing, exclusive\njurisdiction over a spousal-support order may serve as:\n (1) an initiating tribunal to request a tribunal of another state to\nenforce the spousal-support order issued in this state; or\n (2) a responding tribunal to enforce or modify its own spousal-support\norder.\n * NB Effective January 1, 2016\n