Normal Edit doesn't work in BGE if applied

Hi! I made some foliage models and applied the normal edit modifier. However, few days later I found out that pressing P when it is applied makes it just not work in game. When I added another one modifier like that, it messed up the look of plant. How to fix this and how to use edited normals when the modifier is applied?

Well, I mean this:

Ah, different subjects.
You’re right, the “Modifier” seems to be not working when applied?
Bye