N.J. Stat. § 27:16-4: Maps revised; originals voided

After hearing and considering any objections which may be presented, the board may adopt the map or maps, or alter, revise, correct or change them or abandon the improvement. If the board shall alter, revise, correct or change the map or maps, it shall file an altered, revised or corrected map or maps in the office of the county clerk, and those originally filed shall be marked void by the county clerk.