We are preparing to migrate from SmarterTicket to SmarterTrack. Since the conversion utility only works with SmarterTrack 10.x, that's what we're currently using for testing.
The QC behavior for email-based agent responses seems to be different in SmarterTrack. In SmarterTicket, if an agent responds by email, a QC email is sent. In SmarterTrack, QC emails only appear to get generated when the agent responds through the web UI. We're not seeing QC emails in SmarterTrack when responding to tickets from an email client.
Unless I'm missing something, this seems like a bug.