PublishPress Revisions Pro and Custom Post Type UI
Custom Post Type UI is a pluign provides an easy-to-use interface for registering and managing custom post types and taxonomies for your website.
With PublishPress Revisions Pro you can submit, moderate, approve and schedule revisions to your Custom Post Type UI content.
When you edit a published item created with Custom Post Type UI, you can use the “Pending Revision” checkbox:
Your post revision will appear on the main Revision Queue screen:
PublishPress Revisions Pro supports all the core WordPress features. So if you add Categories, Tags, Excerpts or other features to your custom post type, they will be supported when you create revisions.