Custom post item created in Cornerstone not showing up on filter results

We have a custom post type where we enabled Cornerstone and grant it full access.

There are already some “pages” under that custom post type that were created using Cornestone.

However, whenever we create a new page under that custom post type and select the Clone Existing option, some of the those pages do not show up in the search results so we can clone them (please see attached video for reference).

Is there a setting that we’re missing to make sure all pages are showing up in the filter results in the editor?

Thanks!