Image of New Blog template not showing correctly

Since I added the Domain Mapping Plugin, I have had to work with media libraries and images not loading into the correct folder (because had renamed the wp-content folder). Now, I have brought back the original wp-content name, but now when I try to load an image to go along with the templates created in New Blog, it loads a default image of the theme and not the one I upload from my computer.

I'm not sure where those images are stored for New Blog. I don't see them in my main domain media library.

Can a staff person take a quick look? I will grant access. I have three blog templates.

Thanks, Joe.