Creation of mountain bush strip, Trouble saving and reloading project

So im new to scenery creation. Watched some YT videos and experimented with a few things. I have figured out how to place objects and draw polygons. My issue is saving the project so i can do more editing later. They only thing i’m focused on atm is the polygons. I placed some polygons did some terraforming and vegetation removal. I clicked save in the scenery editor panel. First i saved it as a scenery file and then a shape file. Close out of the project then reload it and nothing is there. No placed objects or the terraforming that i did. I have tried for hours to get it to work but nothing is. Can i get some help please?

Sort of figured it out. I used the wizard instead of a sample folder structure.