New York Consolidated Laws, Partnership Law - PTR § 121-603. Withdrawal of a limited partner

(a) A limited partner may withdraw from a limited partnership at the time or upon the happening of events specified in the partnership agreement and in accordance with the partnership agreement.  Notwithstanding anything to the contrary under applicable law, unless a partnership agreement provides otherwise, a limited partner may not withdraw from a limited partnership prior to the dissolution and winding up of the limited partnership.  Notwithstanding anything to the contrary under applicable law, a partnership agreement may provide that a partnership interest may not be assigned prior to the dissolution and winding up of the limited partnership.

(b) A limited partnership whose original certificate of limited partnership was filed with the secretary of state and effective prior to the effective date of this subdivision shall continue to be governed by this section as in effect on such date and shall not be governed by this section, unless otherwise provided in the partnership agreement.