Affects Version/s: 6.1.0 CE GA1, 6.2.0 CE M2
Steps to reproduce the issue:
1. Add a Media Gallery
2. Add an image to the root folder.
3. Add a folder
4. Add another image in the previous folder.
5. Export everything.
6. Create a new site
7. Add a new Media Gallery in the site.
8. Import the previous LAR
You will only be able to see the image inside the folder, but not the image in the root folder.