Duping

I deleted my accounts and I went back to detlas to put some items in my enderchest. The items I had from the previous account remained there, so I had an extra helmet from the underwater treasure quest, another Yahya's bowl, and the flower boots. Can someone remove them from my enderchest?

 

well, you can open a new class and take the items out and delete the class again, i think it works

 

Much quicker way would be to just throw it in a Loot Chest or your Daily Rewards

 

it doesn't work with quest items i believe...

 

Just fill your inventory with an item like emerald and try throwing it, Since your inventory is full, It cant find a place to appear back on, So it will just disappear. (Not visual glitch, It does work)

 

Either doing it quickly enough or swapping the quest item for a daily reward with a full inventory will work

 

So do what @dotGenco said effectively?

 

Yes