@code44 for some reason other plugins that use meta for anything just print “all meta” vs. “what they added meta” and that’s not the way that meta is intended to be used in the back end of Woo/Wordpress. It’s a dynamic storage for all plugins to use however they need to function.
I would suggest that you reach out to the plugin developer and tell them you’ll need to ignore anything that starts with mailchimp_woocommerce
or better yet, only display items that you’re expecting to be used for this plugin you’re referring to. You could probably use this logic to hide them using Javascript too if you’re talking about the woo admin area.
Sorry to push you over to another support thread, but in this case I can say with certainty that it’s something that they will have to build in support for.