Saving and Loading

First off I already have a question like this but no one seemed to be answering.

So I went to this page, http://wiki.unity3d.com/index.php?title=Save_and_Load_from_XML and I understand how it works, but I need it to be set up differently for me. My Main menu and pause menu are on 2 different scenes, so when loading and saving they need to load and save just the 1 scene that you actually play on. So how would you change the script (java) from that link into something that would work on the other 2 scenes?

When thinking about it, as soon as I leave the scene the first person object would be reset anyways so if I create a script where it doesn't destroy on loading the new scene then when you go back it should be fine, right? But even then I still need to find out how to be able to save data from a different scene. Someone in the last question mention something about .NET but i am not too familiar with it.