Infinite SEO & Multi-site

I have Infinite SEO installed in a multi-site environment using the multi-site & domain mapping WPMU plugins. Infinite SEO has been activated across the network and it's SEO meta box shows up on the page/post editing screens for both sites in the network.

However, the Sitemap options only seems to be available for one site and not all of them. Is there a way to change that? I'd like to be able to generate a sitemap for each site in the network.