Help with Redirect Problem

The link is an example of a url that redirects to /2018/04/20/68706-2/. This seems to be automatic. I can’t find where the plugin is doing this. I hope so ?? There is no redirects in the .htaccess or server configs. Somehow a plugin or WP itself is doing this.

The problem is that we are redeveloping the site and there are ton of 404s (over 800), just like this, on the new version of the site. Different theme but same data and plugins. Both have the redirection plugin installed, and are configured the same. The example link does not redirect on the development sight. We need it to. Anyone have a suggestion?

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