N.Y. Real Prop. Law § 297
A copy of a record, or of any recorded instrument, certified or authenticated so as to be entitled to be read in evidence, may be again recorded in any office where the original would be entitled to be recorded. Such record has the same effect as if the original were so recorded. A copy of a conveyance or mortgage affecting separate parcels of real property situated in different counties, or of the record of such conveyance or mortgage in one of such counties, certified or authenticated so as to be entitled to be read in evidence, may be recorded in any county in which any such parcel is situated, with the same effect as if the original instrument authenticated as required by section three hundred and ten of this chapter were so recorded.
N.Y. Real Prop. Law § 297