The ability to export and import your course gives you greater control over your content. You might need to export your course for these reasons:
To create a backup copy of your course that you can import at a later date if you need to revert to a previous version of the course
To create a copy of your course that you can later import into another course
To directly edit the XML in your course
To save your work
To share your course content with an instructor teaching another class
When you export your course, Studio compresses all the course files into one file with the .tar.gz extension. This file uses a standard GNU zip (.gzip) compression algorithm that is commonly used on Unix operating systems to package files, programs, and installers. This file includes:
Course assets
Course content (all sections, subsections, and units)
Course settings
Course structure
Individual problems
Pages
However, the following data will not be exported with your course:
Certificates
Course...