Okay so I tested a module early on by publishing it to cd and then opening it again for editing.

Just this week I completed 9 modules and published them to cd and now I cannot open it for editing. In fact, I can't open it at all with Courselab. Help!

How can I open or re-import the files so I can make changes without having to build them all over again?

Nevermind...I finally found the original file!

Back-ups are fairly important, my important files exist on two HDDs, some NAS and on cloud storage.
You can do some limited editing on the published files, for example you can change images as long as the physical size is similar and minor text editing can be done.
But editing the original source is always best ;)