NJ license inactive - paid or unpaid?

[pbajil]

I am active in PA and no longer need my NJ license but don't want to completely abandon it just in case I need it in 5 years or so. The online renewal has 3 options: active (for $125), inactive (free), and inactive-paid, (which is $65). I don't understand the difference and there is no explanation on the website. Why is there an option to pay $65 to be inactive, when you can apparently be inactive for free?