N.Y. Est. Powers & Trusts Law § 6-5.10

§ 6-5.10 When future estates are defeated\n A future estate cannot be defeated or barred by any disposition or\nother act of the owner of the precedent estate, nor by the destruction\nof such precedent estate by disseizen, forfeiture, surrender, merger or\notherwise; but a future estate may be defeated in any manner which the\ncreator has provided.\n