ColdFusion 2016 install IIS sites are already configured by some other version

I installed ColdFusion 10 on a Windows 2012 R2 server and at the time of the install specified the server to manage all of the IIS sites.  It turns out we decided we no longer want to use version 10 and want to use version 12(2016).  I uninstalled ColdFusion 10 but now when I am reinstalling I am trying to select specify specific IIS sites for ColdFusion to manage instead of All Sites and when I go to add the IIS WebServer I get the following.  "All the IIS sites are already configured by some other version of ColdFusion".

I am have checked IIS and cannot not find any references to ColdFusion files for any of the sites or the server itself.