Globes and Plutos work in the same way. If you cancel a Globe/Pluto exchange, it depends on whether you gave the token or if you received it. If you gave the token to the other member and it has already gone, it will not be returned if you cancel the exchange. If you received the token and you cancel, it will be returned. If it is already committed to another exchange then a different token will be returned. If you don't have a different one to return, a new one will be generated for the other member but you will owe the system a Globe/Pluto which will be returned when you next get one.