Why do i have to take extra step when creating header file in vs2019?

[Hyped]

i’m using visual studio 2019 right now.
when i tried to create HiddenWord.h, all sort of error appeared.
I saw the topic named ‘Weird Errors in Header File’ and it looks like he had exact same problem.
but unlike him, even after i moved my HiddenWord.h from intermediate folder to BullCowGame folder, nothing changed.
after searching internet and all sort of place, i tried

How to add Type header file in UE

and it worked.

After i went through hell, i want to understand why do i have to take all these steps to add single headerfile in unreal, and how to simply these steps.

[DanM]

After moving it to the correct place did you regenerate the project files? Moving it on disk isn’t going to update Visual Studio’s solution file.