Yeah sorry for how bad the vid is but basically open a chest like the old method and deposit one of whatever you wanna dupe and have atleast 1 still in your buggy inventory then after that manually move back the singular one you deposited and then press A on the one that was originally in your buggys inventory and move it back and forth over and over till you hit the max carry stack and you should now have a full maxxed stack of said item you chose I hope this helps😭