diff --git a/resources/profiles/BBL/machine/fdm_machine_common.json b/resources/profiles/BBL/machine/fdm_machine_common.json
index c161bc9a81..59ac9ae52f 100644
--- a/resources/profiles/BBL/machine/fdm_machine_common.json
+++ b/resources/profiles/BBL/machine/fdm_machine_common.json
@@ -106,7 +106,7 @@
     "retraction_speed": [
         "60"
     ],
-    "single_extruder_multi_material": "0",
+    "single_extruder_multi_material": "1",
     "support_air_filtration": "0",
     "wipe": [
         "1"
diff --git a/resources/profiles/Creality/machine/Creality K1 (0.4 nozzle).json b/resources/profiles/Creality/machine/Creality K1 (0.4 nozzle).json
index f91efaf78c..2c77f24220 100644
--- a/resources/profiles/Creality/machine/Creality K1 (0.4 nozzle).json	
+++ b/resources/profiles/Creality/machine/Creality K1 (0.4 nozzle).json	
@@ -38,7 +38,7 @@
 	"retract_length_toolchange": ["1"],
 	"deretraction_speed": ["40"],
 	"z_hop": ["0.4"],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "",
 	"machine_pause_gcode": "PAUSE",
 	"default_filament_profile": ["Creality Generic PLA"],
diff --git a/resources/profiles/Creality/machine/Creality K1 (0.6 nozzle).json b/resources/profiles/Creality/machine/Creality K1 (0.6 nozzle).json
index 297ad3a36f..cad0890027 100644
--- a/resources/profiles/Creality/machine/Creality K1 (0.6 nozzle).json	
+++ b/resources/profiles/Creality/machine/Creality K1 (0.6 nozzle).json	
@@ -39,7 +39,7 @@
 	"retraction_speed": ["40"],
 	"deretraction_speed": ["40"],
 	"z_hop": ["0.4"],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "",
 	"machine_pause_gcode": "PAUSE",
 	"default_filament_profile": ["Creality Generic PLA"],
diff --git a/resources/profiles/Creality/machine/Creality K1 (0.8 nozzle).json b/resources/profiles/Creality/machine/Creality K1 (0.8 nozzle).json
index a9d6336b55..5b28bfaeb3 100644
--- a/resources/profiles/Creality/machine/Creality K1 (0.8 nozzle).json	
+++ b/resources/profiles/Creality/machine/Creality K1 (0.8 nozzle).json	
@@ -38,7 +38,7 @@
 	"retract_length_toolchange": ["1"],
 	"deretraction_speed": ["40"],
 	"z_hop": ["0.4"],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "",
 	"machine_pause_gcode": "PAUSE",
 	"default_filament_profile": ["Creality Generic PLA"],
diff --git a/resources/profiles/Creality/machine/Creality K1 Max (0.4 nozzle).json b/resources/profiles/Creality/machine/Creality K1 Max (0.4 nozzle).json
index f6b60e8668..ee44d5bf2df 100644
--- a/resources/profiles/Creality/machine/Creality K1 Max (0.4 nozzle).json	
+++ b/resources/profiles/Creality/machine/Creality K1 Max (0.4 nozzle).json	
@@ -38,7 +38,7 @@
 	"retract_length_toolchange": ["1"],
 	"deretraction_speed": ["40"],
 	"z_hop": ["0.4"],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "",
 	"machine_pause_gcode": "PAUSE",
 	"default_filament_profile": ["Creality Generic PLA"],
diff --git a/resources/profiles/Creality/machine/Creality K1 Max (0.6 nozzle).json b/resources/profiles/Creality/machine/Creality K1 Max (0.6 nozzle).json
index 958c6c1116..bd608bf6e5 100644
--- a/resources/profiles/Creality/machine/Creality K1 Max (0.6 nozzle).json	
+++ b/resources/profiles/Creality/machine/Creality K1 Max (0.6 nozzle).json	
@@ -38,7 +38,7 @@
 	"retract_length_toolchange": ["1"],
 	"deretraction_speed": ["40"],
 	"z_hop": ["0.4"],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "",
 	"machine_pause_gcode": "PAUSE",
 	"default_filament_profile": ["Creality Generic PLA"],
diff --git a/resources/profiles/Creality/machine/Creality K1 Max (0.8 nozzle).json b/resources/profiles/Creality/machine/Creality K1 Max (0.8 nozzle).json
index 1a5bf6c784..8792552a67 100644
--- a/resources/profiles/Creality/machine/Creality K1 Max (0.8 nozzle).json	
+++ b/resources/profiles/Creality/machine/Creality K1 Max (0.8 nozzle).json	
@@ -38,7 +38,7 @@
 	"retract_length_toolchange": ["1"],
 	"deretraction_speed": ["40"],
 	"z_hop": ["0.4"],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "",
 	"machine_pause_gcode": "PAUSE",
 	"default_filament_profile": ["Creality Generic PLA"],
diff --git a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.2 nozzle).json b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.2 nozzle).json
index f9a655a6de..365566c694 100644
--- a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.2 nozzle).json	
+++ b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.2 nozzle).json	
@@ -7,6 +7,7 @@
 	"inherits": "fdm_elegoo_common",
 	"printer_model": "Elegoo Neptune 4",
 	"default_print_profile": "0.20mm Standard @Elegoo Neptune4 (0.2 nozzle)",
+	"gcode_flavor": "klipper",
 	"nozzle_diameter": [
 		"0.2"
 	],
@@ -36,7 +37,7 @@
 	"machine_max_jerk_y": ["12", "12"],
 	"machine_max_jerk_z": ["0.2", "0.4"],
 	"max_layer_height": [
-		"0.28"
+		"0.16"
 	],
 	"min_layer_height": [
 		"0.08"
@@ -57,7 +58,7 @@
 	"deretraction_speed": [
 		"0"
 	],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "",
 	"machine_pause_gcode": "M0",
 	"default_filament_profile": [
diff --git a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.4 nozzle).json b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.4 nozzle).json
index 3fb59bedb5..71d0c3c3df 100644
--- a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.4 nozzle).json	
+++ b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.4 nozzle).json	
@@ -7,6 +7,7 @@
 	"inherits": "fdm_elegoo_common",
 	"printer_model": "Elegoo Neptune 4",
 	"default_print_profile": "0.20mm Standard @Elegoo Neptune4 (0.4 nozzle)",
+	"gcode_flavor": "klipper",
 	"nozzle_diameter": [
 		"0.4"
 	],
@@ -36,7 +37,7 @@
 	"machine_max_jerk_y": ["12", "12"],
 	"machine_max_jerk_z": ["0.2", "0.4"],
 	"max_layer_height": [
-		"0.28"
+		"0.32"
 	],
 	"min_layer_height": [
 		"0.08"
@@ -57,7 +58,7 @@
 	"deretraction_speed": [
 		"0"
 	],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "",
 	"machine_pause_gcode": "M0",
 	"default_filament_profile": [
diff --git a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.6 nozzle).json b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.6 nozzle).json
index f22b9b3be9..493cc54567 100644
--- a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.6 nozzle).json	
+++ b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.6 nozzle).json	
@@ -7,6 +7,7 @@
 	"inherits": "fdm_elegoo_common",
 	"printer_model": "Elegoo Neptune 4",
 	"default_print_profile": "0.20mm Standard @Elegoo Neptune4 (0.6 nozzle)",
+	"gcode_flavor": "klipper",
 	"nozzle_diameter": [
 		"0.6"
 	],
@@ -36,7 +37,7 @@
 	"machine_max_jerk_y": ["12", "12"],
 	"machine_max_jerk_z": ["0.2", "0.4"],
 	"max_layer_height": [
-		"0.28"
+		"0.4"
 	],
 	"min_layer_height": [
 		"0.08"
@@ -57,7 +58,7 @@
 	"deretraction_speed": [
 		"0"
 	],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "",
 	"machine_pause_gcode": "M0",
 	"default_filament_profile": [
diff --git a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.8 nozzle).json b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.8 nozzle).json
index 94588a5d4a..4dd7423fff 100644
--- a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.8 nozzle).json	
+++ b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 (0.8 nozzle).json	
@@ -7,6 +7,7 @@
 	"inherits": "fdm_elegoo_common",
 	"printer_model": "Elegoo Neptune 4",
 	"default_print_profile": "0.20mm Standard @Elegoo Neptune4 (0.8 nozzle)",
+	"gcode_flavor": "klipper",
 	"nozzle_diameter": [
 		"0.8"
 	],
@@ -36,7 +37,7 @@
 	"machine_max_jerk_y": ["12", "12"],
 	"machine_max_jerk_z": ["0.2", "0.4"],
 	"max_layer_height": [
-		"0.28"
+		"0.6"
 	],
 	"min_layer_height": [
 		"0.08"
@@ -57,7 +58,7 @@
 	"deretraction_speed": [
 		"0"
 	],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "",
 	"machine_pause_gcode": "M0",
 	"default_filament_profile": [
diff --git a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.2 nozzle).json b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.2 nozzle).json
index 7f4a07e65b..08f4a9dbdc 100644
--- a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.2 nozzle).json	
+++ b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.2 nozzle).json	
@@ -7,6 +7,7 @@
 	"inherits": "fdm_elegoo_common",
 	"printer_model": "Elegoo Neptune 4 Pro",
 	"default_print_profile": "0.20mm Standard @Elegoo Neptune4Pro (0.2 nozzle)",
+	"gcode_flavor": "klipper",
 	"nozzle_diameter": [
 		"0.2"
 	],
@@ -36,7 +37,7 @@
 	"machine_max_jerk_y": ["12", "12"],
 	"machine_max_jerk_z": ["0.2", "0.4"],
 	"max_layer_height": [
-		"0.28"
+		"0.16"
 	],
 	"min_layer_height": [
 		"0.08"
@@ -60,7 +61,7 @@
 	"deretraction_speed": [
 		"0"
 	],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "",
 	"machine_pause_gcode": "M0",
 	"default_filament_profile": [
diff --git a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.4 nozzle).json b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.4 nozzle).json
index f86a6e27d4..a0583b06b8 100644
--- a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.4 nozzle).json	
+++ b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.4 nozzle).json	
@@ -7,6 +7,7 @@
 	"inherits": "fdm_elegoo_common",
 	"printer_model": "Elegoo Neptune 4 Pro",
 	"default_print_profile": "0.20mm Standard @Elegoo Neptune4Pro (0.4 nozzle)",
+	"gcode_flavor": "klipper",
 	"nozzle_diameter": [
 		"0.4"
 	],
@@ -36,7 +37,7 @@
 	"machine_max_jerk_y": ["12", "12"],
 	"machine_max_jerk_z": ["0.2", "0.4"],
 	"max_layer_height": [
-		"0.28"
+		"0.32"
 	],
 	"min_layer_height": [
 		"0.08"
@@ -60,7 +61,7 @@
 	"deretraction_speed": [
 		"0"
 	],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "",
 	"machine_pause_gcode": "M0",
 	"default_filament_profile": [
diff --git a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.6 nozzle).json b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.6 nozzle).json
index 78b293e8ee..6078a9544b 100644
--- a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.6 nozzle).json	
+++ b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.6 nozzle).json	
@@ -7,6 +7,7 @@
 	"inherits": "fdm_elegoo_common",
 	"printer_model": "Elegoo Neptune 4 Pro",
 	"default_print_profile": "0.20mm Standard @Elegoo Neptune4Pro (0.6 nozzle)",
+	"gcode_flavor": "klipper",
 	"nozzle_diameter": ["0.6"],
 	"printer_variant": "0.6",
 	"printable_area": ["0x0", "225x0", "225x225", "0x225"],
@@ -28,7 +29,7 @@
 	"machine_max_jerk_x": ["12", "12"],
 	"machine_max_jerk_y": ["12", "12"],
 	"machine_max_jerk_z": ["0.2", "0.4"],
-	"max_layer_height": ["0.28"],
+	"max_layer_height": ["0.4"],
 	"min_layer_height": ["0.08"],
 	"printer_settings_id": "Elegoo",
 	"retraction_minimum_travel": ["1"],
@@ -37,7 +38,7 @@
 	"retraction_speed": ["25"],
 	"retract_length_toolchange": ["2"],
 	"deretraction_speed": ["0"],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "",
 	"machine_pause_gcode": "M0",
 	"default_filament_profile": ["Elegoo Generic PLA @0.6 nozzle"],
diff --git a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.8 nozzle).json b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.8 nozzle).json
index 5919cbf00d..cd5add019d 100644
--- a/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.8 nozzle).json	
+++ b/resources/profiles/Elegoo/machine/Elegoo Neptune 4 Pro (0.8 nozzle).json	
@@ -6,6 +6,7 @@
   "instantiation": "true",
   "inherits": "fdm_elegoo_common",
   "printer_model": "Elegoo Neptune 4 Pro",
+  "gcode_flavor": "klipper",
   "default_print_profile": "0.20mm Standard @Elegoo Neptune4Pro (0.8 nozzle)",
   "nozzle_diameter": ["0.8"],
   "printer_variant": "0.8",
@@ -28,7 +29,7 @@
   "machine_max_jerk_x": ["12", "12"],
   "machine_max_jerk_y": ["12", "12"],
   "machine_max_jerk_z": ["0.2", "0.4"],
-  "max_layer_height": ["0.28"],
+  "max_layer_height": ["0.6"],
   "min_layer_height": ["0.08"],
   "printer_settings_id": "Elegoo",
   "retraction_minimum_travel": ["1"],
@@ -37,7 +38,7 @@
   "retraction_speed": ["25"],
   "retract_length_toolchange": ["2"],
   "deretraction_speed": ["0"],
-  "single_extruder_multi_material": "0",
+  "single_extruder_multi_material": "1",
   "change_filament_gcode": "",
   "machine_pause_gcode": "M0",
   "default_filament_profile": ["Elegoo Generic PLA @0.8 nozzle"],
diff --git a/resources/profiles/Sovol/machine/Sovol SV07 0.4 nozzle.json b/resources/profiles/Sovol/machine/Sovol SV07 0.4 nozzle.json
index b97b13f347..51ca43ed74 100644
--- a/resources/profiles/Sovol/machine/Sovol SV07 0.4 nozzle.json	
+++ b/resources/profiles/Sovol/machine/Sovol SV07 0.4 nozzle.json	
@@ -114,7 +114,7 @@
 	"deretraction_speed": [
 		"140"
 	],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "M600\nG1 E0.4 F1500 ; prime after color change",
 	"machine_pause_gcode": "M601",
 	"default_filament_profile": [
diff --git a/resources/profiles/Sovol/machine/Sovol SV07 Plus 0.4 nozzle.json b/resources/profiles/Sovol/machine/Sovol SV07 Plus 0.4 nozzle.json
index 7d267b2e73..457b1efa8f 100644
--- a/resources/profiles/Sovol/machine/Sovol SV07 Plus 0.4 nozzle.json	
+++ b/resources/profiles/Sovol/machine/Sovol SV07 Plus 0.4 nozzle.json	
@@ -114,7 +114,7 @@
 	"deretraction_speed": [
 		"140"
 	],
-	"single_extruder_multi_material": "0",
+	"single_extruder_multi_material": "1",
 	"change_filament_gcode": "M600\nG1 E0.4 F1500 ; prime after color change",
 	"machine_pause_gcode": "M601",
 	"default_filament_profile": [
diff --git a/resources/profiles/Wanhao/machine/fdm_machine_common.json b/resources/profiles/Wanhao/machine/fdm_machine_common.json
index 16b7852aea..593eb06dc1 100644
--- a/resources/profiles/Wanhao/machine/fdm_machine_common.json
+++ b/resources/profiles/Wanhao/machine/fdm_machine_common.json
@@ -105,7 +105,7 @@
     "retraction_speed": [
         "60"
     ],
-    "single_extruder_multi_material": "0",
+    "single_extruder_multi_material": "1",
     "change_filament_gcode": "",
     "wipe": [
         "1"
diff --git a/src/libslic3r/Print.cpp b/src/libslic3r/Print.cpp
index a88fc726fc..d6b6a96635 100644
--- a/src/libslic3r/Print.cpp
+++ b/src/libslic3r/Print.cpp
@@ -182,7 +182,7 @@ bool Print::invalidate_state_by_config_options(const ConfigOptionResolver & /* n
         "nozzle_hrc",
         "required_nozzle_HRC",
         "upward_compatible_machine",
-        // SoftFever
+        // Orca
         "chamber_temperature",
         "thumbnails",
         "thumbnails_format",
@@ -200,7 +200,10 @@ bool Print::invalidate_state_by_config_options(const ConfigOptionResolver & /* n
         "single_extruder_multi_material_priming",
         "activate_air_filtration",
         "during_print_exhaust_fan_speed",
-        "complete_print_exhaust_fan_speed"
+        "complete_print_exhaust_fan_speed",
+        "activate_chamber_temp_control",
+        "manual_filament_change"
+
     };
 
     static std::unordered_set<std::string> steps_ignore;
diff --git a/src/slic3r/GUI/Tab.cpp b/src/slic3r/GUI/Tab.cpp
index 80fa57835e..602aafd304 100644
--- a/src/slic3r/GUI/Tab.cpp
+++ b/src/slic3r/GUI/Tab.cpp
@@ -3473,13 +3473,14 @@ void TabPrinter::build_unregular_pages(bool from_initial_build/* = false*/)
         auto page     = add_options_page(L("Multimaterial"), "printer", true);
         auto optgroup = page->new_optgroup(L("Single extruder multimaterial setup"));
         optgroup->append_single_option_line("single_extruder_multi_material");
-        optgroup->m_on_change = [this, optgroup](const t_config_option_key &opt_key, const boost::any &value) {
-            wxTheApp->CallAfter([this, opt_key, value]() {
-                if (opt_key == "single_extruder_multi_material") {
-                    build_unregular_pages();
-                }
-            });
-        };
+        // Orca: we only support Single Extruder Multi Material, so it's always enabled
+        // optgroup->m_on_change = [this, optgroup](const t_config_option_key &opt_key, const boost::any &value) {
+        //     wxTheApp->CallAfter([this, opt_key, value]() {
+        //         if (opt_key == "single_extruder_multi_material") {
+        //             build_unregular_pages();
+        //         }
+        //     });
+        // };
         optgroup->append_single_option_line("manual_filament_change");
 
         optgroup = page->new_optgroup(L("Wipe tower"));