Import settings wrote manually

Hello,

I am trying to have a repo where I can track how my settings are updated and be able to restore them. So I exported the settings.jar file. Change the extension to zip, unzip it and use those files in my git repo. 

Now to restore, I use the `zip` command, to create a zip archive, rename it to .jar.

The issue comes when I go to file > import settings, I get an error message saying "The file ... contains no settings to import."

Thank you.