Packaged game not working as it did on the editor

Hello, So I have a quite important problem, which is that in the editor, when I test the game, everything works fine, but then, when I package the game and its ready to play, some props are on different places, and in my case, there are doors in my game which in the editor they worked fine, but after packaging the didnt work anymore, and I dont know why to be honest. So if someone could help me it would be great, because im lost at this point.