FrameMaker workspace changes with every document I open

Hello, I have another really simple but annoying issue. I will get my workspace set up exactly the way I want it. I save it. And then as soon as I open another document, even in the same book, it all goes wonky again with the workspace bar changing and random panels opening up and my structure/book menu changing size. Is there something I am not doing that is causing this to happen? A coworker suggested saving a copy of the workspace file to my desktop so I can "reset" it but this happens almost every time I open a document, I don't have time to keep reloading a saved file like that. 

Thanks,

Dan