On the top right of the dashboard editor you will find the Version history button. Clicking on it will show you a list of automatically saved versions of your dashboard and clicking on any of them will allow you to see what the dashboard looked like at that point.
If you need to restore a previous version you may click on the three dots icon to the right of that version and select Restore and a confirmation modal will appear.
You can publish a specific dashboard version via the three dots menu. The published version in the production environment will be the one shown by default when embedding, using public link sharing, and in exports—until a different version is published. This allows you to finalize and test changes in separate environments before reflecting them in production. You can choose to publish a version to a specific environment (e.g., production, acceptance, or development). This is part of Luzmo provides to support development environments.