But then you still need to explain what the old tnt duper was (which was a bug because you should not be able to dupe items)
Well tnt dupers have changed from 1.12 to 1.15 and i want the old 1.12 tnt duper mechanics so i can make a quarry work in 1.15
You are the one requesting the plugin, not me. There is an entire "read me first" that has a suggested format. You did not fill that format in, you did not explain how it would work. We should not have to google something that you want.