The OPC-COM Tunnel Module is working great!
The only minor issue I found (and it may have nothing to do with Ignition) is when I copy and paste an existing connected SQL Tag subscribed to a Cimplicity OPC Server through the tunneler, the original tag goes stale. I believe the reason for this is that it opens a new subscription and a drops the previous one.
Other than that, it is flawless!! Great job guys!!