Did you have federal tax withheld or New Jersey tax withheld? If federal tax was withheld, in W-2G box 4, that does not apply to the New Jersey tax return, so it will not be transferred. If the W-2G has NJ in box 13 and state tax withheld in box 15, that should transfer to the New Jersey tax return. But check to make sure that the New Jersey tax withheld on the W-2G is included in the New Jersey tax withheld on Form NJ-1040NR line 50.
