Aeon Nox/Background/Portable

I am new to this kind of thing. But I am learning. Win 10, Jarvis, Aeon Nox.
My problem is this. I have put together my own setup (add-ons) and I have it just the way I want it. But is I move it (different drive) I have to reset the background all over again. This is a pain.
When I look into the GUI setting in Notepad++ I cannot find the ‘C:’ to change the text ‘special://’.
Can someone help me find where to put the text to change this?