Hi.

I’m having the exact same problem. It makes the theme really hard to use at this point, especially since it does not seem like there is a built-in settings back up function.

To reproduce:

• Change theme settings to something different than default.
• Go to Appearance/Menus
• At the top, click Manage with Live Preview
• Make any change to the menu
• Save and publish
• Refresh the page, all custom theme settings are gone…