I have a blog at http://www.minesf.com/resources/cca on which I have YOAST SEO installed. For most recent posts when I share them on Facebook it does a good job of attaching the featured image as the thumbnail and using my meta description (though curiously sometimes my excerpt) as the description for the share.
On older posts (and I can't pinpoint the date) it doesn't do either of the above, but includes a long ugly URL as the title and pulls the first XX characters as the description.
I've gone in and edited these older posts, including relinking images, etc. but to no avail.
Does anyone know of a way that I can update these older posts so that my social shares pull from the open graph data?