I got the level dupe in robot 64 the editor items didn't work. Could someone more educated in this matter explain this to me? Thanks.

@JCMT When you died, you didn't press 'Test Here' after the return to the level creator. Also I've already been working on a code. DM me if you want it.

oh its 'test here' instead of 'test at spawn' now?

No. It is called testing dupe not level dupe since there are two dupes that can happen from level creator. When you are in arrow state and when you are testing. You were still in arrow state after teleporting to level creator therefor doing roblox8192 dupe instead of the testing dupe that has portals and doors work.

Thank you guys!

i tried teleporting to hub and then quickly pressing 'test here' and the world just disappeared and i got softlocked

it posted 3 of this because i was lagging

You don't do test here. Do test at spawn instead. That happened though because you weren't fast enough so make sure you are using the hotkeys.