ASPR Directories.

Good day to all. My question is probably pretty basic and silly, but here goes.
We are still using 6.1 (contemplating an upgrade but can't justify the cost at this point). So here is the scenario:

1. We have a project directory,
   
2. Within this project directory, there are several others (Output, Source, Visual, Visual\Original.
   What are these for? The reason for the question is this, we have made several changes to the HTML and VE Screens for forms etc. Once in a while, we make a change realize - OOPS, then reset the page. What we want to do is to reset to the Most Recent Change. We suspect that the Visual\Original has something to do with preserving these states.
   However, when we copy the current files from the Visual dir to the Original one, then click reset this page, it returns to the Original State from when we first built the project.
   Now this is not critical, as we Winzip everything before making any changes, but it would be nice if we can just copy the files to something like the "Orginal Folder".
   Also, if we want to upgrade from 6.1 to 6.3, do we have to do an dual step upgrade? I can't seem to see this point on the website.
   Thanks so much for any help, suggestions or pointers.
   Dixie