Hello, my friends and I found another way to dupe items, the steps will be listed below.
1. As always make sure you have a decent sized backpack.
2. Put the loot you want to be duped into the backpack.
3. At this point your friend/s will have to drop their backpack away from where you drop your backpack.
4. Drop your backpack and wait until both you and your friend/s are hovering over the take backpack command.
5. Afterwards countdown to whatever you feel like and take the backpack at the same time.
6. At this point anyone involved should have a backpack on their back (don't open it), now all you and your friend/s have to do is relog and everyone should have the same loot in the backpack upon relogging into the server.
Note: This method works with only 2+ players. Its a good way to dupe items fast if you have more than 2 players doing it.