State tax filing

@fanfare I see you point.  

 

My case is, I sold my losing stocks.  Say, 

 

I purchased Stocks A for $5000, when I converted, it was $3000. So I have no tax gains, so no tax.

 

But even I still have $2000 allowance left, can I use/claim that allowance next year? 

 

Isn't that security specific, when NJ asked you the basis?