In the Mix window, if a hidden track is part of an enabled group, all Mix window operations performed on other members of the group
also affect the hidden track—with the exception of audio or MIDI record-enabling. If you solo, mute, or automation write-enable a grouped track, any group members that are hidden are soloed, muted, or automation write-enabled as well.
In the Edit window, however, editing operations performed on members of an enabled group do
not affect hidden tracks that are also members of the enabled group.