Config variables not read in build

Development Programming & Scripting Blueprint
1

UE4.18.3

I using config variables in blueprint (EventGraph -> EvenBeginplay).

Tooltip showes that I should add my lines to:

https://forums.unrealengine.com/filedata/fetch?filedataid=127856&type=thumb

…Project\Saved\Config\Windows\Engine.ini
…Project\Saved\Config\Windows\Game.ini

but every time I run Editor, that files are overwrited and my line are ereased.

It works when I add my lines to other files:

…Project\Config\DefaultEngine.ini
…Project\Config\DefaultGame.ini

But when I build my game, variables can’t be changed, even if I change it in config files.