Rise 360 Course did not save

Hi there, 

I chose an existing lesson to create my course with. I deleted all the content from the lesson and replaced it with my info. After a couple weeks, I checked back and noticed that my changes/updates were not saved and that the original lesson was still there. Any reason to this? I had assumed that Rise 360 saves our progress as we go, is it because I did not create a duplicate, and instead worked directly on the original lesson?