Refering to #21213...
I used Kickstart 4.0 this time to restore a site. This time the file en-GB.kickstart.ini was still there after clean-up...
I only upload these files when I restore:
en-GB.kickstart.ini
jquery.min.js
json.min.js
SITE BACKUP FILE
renamed kickstart.php
This works OK as far as I can tell. Except for the ini file that is not removed.