Cheating in Achievement worlds

How I found it (It was easy):
I was playing a world with a friend and then we died due to MCPE-95562.
Soon after, I came across this video to spawn back in my stuff, whilst still having achievements on my world: How to play Creative with Achievements on Bedrock Edition v1.16.220! One thing I would like to make clear is that I didn't abuse it and I only told one person that was curious. I know he is not abusing it, since he is Ulraf's Discord mod and I trust this Discord mod.

Steps to Reproduce:
1. Copy the world you want to cheat inside.
2. Turn on creative in one of the worlds.
3. Spawn in the things you need (This can even be non-survival blocks).
4. Go back into survival and leave the world.
5. Open your files folder.
6. Got to %LocalAppData%\Packages\Microsoft.MinecraftUWP_8wekyb3d8bbwe\LocalState\games\com.mojang\minecraftWorlds.
7. Copy the level.dat file of the world with achievements still turned on.
8. Replace the level.dat file of the creative/cheated world with the level.dat you just copied.
9. Now, you should have achievements whilst still having cheated items.

Expected Results:
You should have achievements turned on, whilst having items spawned in.