We'll create fresh WordPress site with Customizer EX installed. You have 20 minutes to test the plugin after that site we'll be deleted.
This plugin allows you easily export and import Customizer settings.
To make export/import go to Settings – Customizer EX page.
After activation current customizer settings will be saved at file theme_mods_themename.txt in ‘/wp-content/uploads/’ directory.
If after file upload and import you see message ‘Error import data!’ check your file permissions. It must be 0755.