posts in one category not indexing

The URL above redirects to blogs.ifas.ufl.edu/global which is the global tags site.

If you look at this category page on the global site https://blogs.ifas.ufl.edu/global/category/natural-resources/invasive-species/ the latest post is from a year ago. But the same category on network sites, such as https://blogs.ifas.ufl.edu/marionco/category/natural-resources/invasive-species/ do have more recent posts.

I compared the setup of the natural-resources/invasive-species category on the two sites mentioned above. Both have the title and slug spelled the same.

Do you have any idea why posts for this category are not being indexed to global but posts for all other categories are being indexed correctly?

The page I need help with: [log in to see the link]