You don't need to find Postie Pete to do this. You have to be *in a bank* when you open up Postie Pete's Post Office (by clicking on a Postage Stamp). If you do that, then you'll be able to convert stamps to parcels. Then open all the parcels. I assume the parcels as well as stamps are what will disappear. Better do this soon. I think it expires on Dec. 31, 2018 (tomorrow).