How do I retain the individual lighting settings when switching scenes?

I have a main menu in my game that loads the actual game when you press a button. The problem is that the lighting settings (like light bounce and ambient intensity) stay the same as the menu on the second scene. Even if I change the settings on scene 2, it only uses the initial lighting settings. How do I fix this? Edit: it turns out that the settings are automatically set to zero when switching the scene. Nevertheless, the question stays the same: how do I keep the settings?