Adding Armor pass?

[PokeJermz]

I purchased the DLC for Sword (my main game) but I didn't for Shield. Messing with my Shield save file in PkHex, I noticed that you're able to add the armor pass to your key items.. Has anybody tried this? Does it work? Could it get you in trouble?

[Kaphotics]

Buy the DLC if you want to play the DLC.