Application versions are independent and not all packaged when using the export feature. You chose the version you want to export, and it will be the only version of the application in the package when you use the export feature.
The export file created will look like this skylight-export-Device and user type-03.zip . the last two digits represent the version you have exported. In this example I exported the draft version of my application.
In my example here, if you import this package as a new application its version number will now become 1 as it is the first version of the newly created application.