N.Y. Real Prop. Law § 420
All charges, liens and incumbrances on registered property, or on any estate, right or interest in the same, and all rights therein may be enforced as now allowed by law; and all laws with reference to the foreclosure, release or satisfaction of mortgages shall apply to mortgages on registered property or on any estate, right or interest therein, except as herein otherwise provided, and except that until notice of the pendency of any suit to enforce such mortgage, charge, lien or incumbrance is filed in the registrar's office and a memorial thereof entered on the certificate in the title book, the pendency of such suit shall not be notice to the registrar or to any person dealing with the property or any right or interest therein. Upon the sale under foreclosure or other action or proceeding directing the sale of real property, the title to which is then a registered title, it shall be the duty of the officer making the sale to report such sale to the justice assigned to the "title part" of the special term, who shall thereupon designate an official examiner of title to examine into the action or proceeding or any other fact or circumstance affecting the title since the last registration thereof. The examiner of title shall prepare his report immediately and shall file one copy with the court designating him and one copy with the officer making the sale. The officer making the sale shall not deliver a deed of the property sold until the examiner's report is filed with him showing the regularity of the acts and proceedings subsequent to the last registration of title. The justice of the "title part" shall upon the production of the deed from the officer making the sale and upon the report of the examiner approve said deed and make an order directing the registrar to register the title accordingly. The fees for the services of the official examiner under this section shall not exceed the sum of five dollars unless an additional allowance is directed by the justice of the "title part."
N.Y. Real Prop. Law § 420