View in Marketo link in SFDC Sandbox goes to Production

We just refreshed our SFDC Sandbox. 

Now, of course there are considerations you must make when doing this to contact Marketo Support to properly get your sync back up and running.

Also when doing so, I think we "broke" the link on our page views to the link we have to "View in Marketo" for our Leads and Contacts.

Right now the link is "/apex/mkto_si__Marketo_Lead_Detail?objType=Contact", however when someone clicks on the link, it is pointing to our production instance of Marketo and not the Marketo Sandbox.

What does it need to be changed to, or where is the setting that needs to be updated to properly get Sandbox to Sandbox linkage?

Thanks in advance!