Reading .sav files from packaged game root folder

I made an editor for my game. Editor makes complex levels from instanced meshes. Takes a lot of time to generate just one level, so I save these precomputed instances as unreal .sav files.
Load those files from /saved/savedgames in my actual game and everything works great.
I package the game and put those .sav files in game root folder/saved/savedgames - game does not read them, then I put them in game root or any other game folder - game does not read them.
Do I need to convert an entire project to c++ and make my own load function just to read .sav files from packaged game root folder?

There is a get project saved directory function. I will use copy file function the first time user starts a game. Hopefully this will work.