This is a way to use Shopify's preview feature to check draft products, pages, and blog posts in a backup theme. Normally, you can check draft information from the preview in the admin panel, but in that case, the live theme is applied. This can now be checked in the backup theme as well.
How to preview a draft product in a backup theme
Click on the draft product preview and copy the URL that appears after "/products_preview?...."
Preview the theme you want to check from the theme library, replace the URL directly under the domain with the URL you copied, and access it to "preview the draft product with the theme you saved."
