JSON: fix more dual extrusion global_only (CURA-458)

resources/machines/dual_extrusion_printer.json

@@ -235,7 +235,8 @@
                     "max_value_warning": "100",
                     "visible": false,
                     "inherit_function": "machine_heat_zone_length",
-                    "enabled": "retraction_enable"
+                    "enabled": "retraction_enable",
+                    "global_only": true
                 },
                 "switch_extruder_retraction_speeds": {
                     "label": "Nozzle Switch Retraction Speed",
@@ -248,6 +249,7 @@
                     "visible": false,
                     "inherit": false,
                     "enabled": "retraction_enable",
+                    "global_only": true,
                     "children": {
                         "switch_extruder_retraction_speed": {
                             "label": "Nozzle Switch Retract Speed",
@@ -258,7 +260,8 @@
                             "min_value": "0.1",
                             "max_value_warning": "300",
                             "visible": false,
-                            "enabled": "retraction_enable"
+                            "enabled": "retraction_enable",
+                            "global_only": true
                         },
                         "switch_extruder_prime_speed": {
                             "label": "Nozzle Switch Prime Speed",
@@ -269,7 +272,8 @@
                             "min_value": "0.1",
                             "max_value_warning": "300",
                             "visible": false,
-                            "enabled": "retraction_enable"
+                            "enabled": "retraction_enable",
+                            "global_only": true
                         }
                     }
                 }