Just discovered this. In the Impling minigame on puro puro there are some "defender imps" that will take your imps and release them out of your jars. Basically all you have to do is bring and invo full of dragon impling jars and let the imp defenders release them one at a time (preferably on an empty world). Dragon impling jars are 300k each so an inventory would be 8.4m, then you can just bank and do it again.
Please note that you must need 80 hunter (with a pot) on the account you are xferring to and some binds/snares would be helpful to keep the released implings in place. if an inventory is done in 10 minutes, well that's 50m+ xferred per hour if you wish
peace
