After => The code is from templates/front-page.html
This is the part that was different between before and after. I grabbed this line from my Front Page template and the rest is identical. The "theme" part was added to the After version with a value that is the same as the folder name after I activated the theme folder from the WP admin page.
I assume there is some missing info stored in the DB that didn’t get exported? These screenshots might help you see what was changed: