I  have been able to set the news provider for biodiesel.org to use the provider that nbb.org uses. That works ok ,however I need to have the classifications consistent between both sites. I cannot filter by category on the Biodiesel.org site. How do I use the classification provider and data for nbb.org on biodiesel.org?

We are not using multisite.   I use site A's news provider as the provider for news on Site B. But I need to have Site A's classification provider on Site B as well. These are stand alone installations.