diff --git a/libs/ardour/mixer_scene.cc b/libs/ardour/mixer_scene.cc
index 1899b7380f..5ca7928459 100644
--- a/libs/ardour/mixer_scene.cc
+++ b/libs/ardour/mixer_scene.cc
@@ -67,7 +67,9 @@ MixerScene::snapshot ()
 		if (!std::dynamic_pointer_cast<AutomationControl> (c)) {
 			continue;
 		}
-		if (c->flags () & Controllable::HiddenControl) {
+		if (std::dynamic_pointer_cast<GainControl> (c)) {
+		}
+		if (c->flags () & Controllable::Flag (Controllable::HiddenControl | Controllable::MonitorControl)) {
 			continue;
 		}
 		_ctrl_map[c->id ()] = c->get_save_value ();
diff --git a/libs/ardour/route.cc b/libs/ardour/route.cc
index cf574b2a66..8cba924ed6 100644
--- a/libs/ardour/route.cc
+++ b/libs/ardour/route.cc
@@ -226,6 +226,8 @@ Route::init ()
 
 	if (is_monitor ()) {
 		_amp->set_display_name (_("Monitor"));
+		_gain_control->set_flag (Controllable::MonitorControl);
+		_trim_control->set_flag (Controllable::MonitorControl);
 	}
 
 	if (!is_singleton () && !is_auditioner ()) {
diff --git a/libs/pbd/pbd/controllable.h b/libs/pbd/pbd/controllable.h
index 64538f8b95..fe95932c8b 100644
--- a/libs/pbd/pbd/controllable.h
+++ b/libs/pbd/pbd/controllable.h
@@ -79,6 +79,7 @@ public:
 		NotAutomatable = 0x08,
 		InlineControl  = 0x10,
 		HiddenControl  = 0x20,
+		MonitorControl = 0x40,
 	};
 
 	Controllable (const std::string& name, Flag f = Flag (0));