11R - PT11 Audio

[brianiac5150]

For some reason, I always feel inclined to apologize for any oversight of a previous similar posting, so: sorry for any duplicity.

That said; I'm still in the trial version of PT11 on my Win7 Pro PC and have been running it using a Mackie Onyx 1640FW as the main interface. Today I've tried running using the 11R as the interface and seem to be stumbling with an issue. When firing up PT10.3.6 and at the start of a completely new session (Guitar - Metal Guitar, for example), the Eleven Rack becomes inaudible until I arm a track it is routed to. Do the same in PT11, the Eleven Rack is still audible and never mute-able. I even re-installed the 11R driver (1.1.6) and now, as opposed to hearing L&R all the time, I only hear left.

Any direction and/or resolving response would be greatly appreciated.