Help with upgrading my game's version

Godot Version

3.5.3 to 4.6.1

Question

Soooooooooo, i wanted to upgrade my game’s version from 3.5.3 to 4.6.1 but the first shot with the built-in upgrader was bad and didnt upgrade all the scripts fully and properly, so how to make it work properly and fully changes the code?

Did you read this article and follow the advice?