Tony,
– Select any channel
– Go to the ‘Routing’ tab
– Hit “Setup” and select the main routing window
From here you have more global settings. You can select the direct out source, if it follows the fader and if it follows mute. This may solve your issue.
However, be aware that “mute groups” are really just an extension of DCA’s with no fader – so it may require a “follow fader” to work which isn’t what you want for the direct outs to monitors but would validate the issue.
If you haven’t gone through and hit “setup” on every screen, I highly recommend it. Lot’s of hidden settings that are very useful.
Jay