Managed Metadata Service and Content Type Hubs - Service Connection necessary?

I created a site collection and activated the content type hub feature at the site collection level. We have an existing managed metadata service but I am unable to edit its settings, so I created a new MMS in a new database, however; there is no "service connection" row below the MMS row for the new MMS Application, but there is one for the old MMS Application. Will this still work with my content type hub? If not, how can I get the service connection setting/row? I have to do this via PowerShell since the menus in the ribbon are not usable due to our JavaScript settings...