Do I pay to park or forward my number while it's licensed to someone else?

In this article:

As a seller or licensor of a number, you only pay to park or forward your number when it's in your account waiting to be licensed or sold. Once that number has been licensed to someone else, they assume the responsibility of paying for the service on that number. If at any point the license is cancelled, the seller or licensor again assumes responsibility for the parking or forwarding fees on the number.