NJ?
This is a carryforward. It doesn't stop carrying a business loss forward because you have closed a particular business.
Taxpayers may carryforward business-related losses during each of the 20 taxable years following the alternative business loss’ taxable year.
You shouldn't delete it. You have many years to use this loss against future business-type income.
http://www.state.nj.us/treasury/taxation/pdf/nettingnotice.pdf
