As of SuiteCommerce 2022.2, when updating the path of an unpublished landing page in the content management tool(SMT), all content disappears from the page.
If you find yourself in this situation, restore the path to the previous iteration and save. Your content will be restored. If you wish to proceed with the updated path, first publish the page and then revise the path. You can use the page visibility settings to prevent public access when performing this action.