Hello. Thank you for contacting the Toolset support.
No - unfortunately, there is no way to view the leftover posts, as you can see in the message that those actions either you can perform manually or it will be removed automatically. However, this applies and important when you are querying intermediary post type with the view but I don't think you are using intermediary post type with your view.
So, please make the full backup of your database if you want to perform the action or either it will be handled automatically.