When Kuroro Lucifer steals the ability of another nen user, does it mean that the original user wont be able to use it anymore? Or is it like a copy-paste, like Ging copy-pasting the punching abilities? Because in the last arc, he was using Shalnark's ability 'Black voice'.
Does it mean the original user can't use it anymore? Can Chrollo give back the nen abilities that he stole?