diff --git a/classes/deck/nodes/group/group_input_node.gd b/classes/deck/nodes/group/group_input_node.gd
index 61b3be3..0ad5b6c 100644
--- a/classes/deck/nodes/group/group_input_node.gd
+++ b/classes/deck/nodes/group/group_input_node.gd
@@ -87,7 +87,7 @@ func _post_deck_load() -> void:
 		var gp := _belonging_to.group_descriptors.get_input_port(port.index_of_type)
 		if gp.is_empty():
 			continue
-		port.label = gp.label
+		port.label = gp.label if not gp.label.is_empty() else "Input %s" % port.index
 		port.descriptor = gp.descriptor
 		port.type = gp.type
 		port.usage_type = gp.usage_type
diff --git a/classes/deck/nodes/group/group_node.gd b/classes/deck/nodes/group/group_node.gd
index 86ada0d..95fafd5 100644
--- a/classes/deck/nodes/group/group_node.gd
+++ b/classes/deck/nodes/group/group_node.gd
@@ -14,12 +14,26 @@ var input_node_id: String
 var output_node_id: String
 
 var extra_ports: Array
+var extra_port_values: Array:
+	get:
+		if extra_port_values.is_empty():
+			return get_all_ports().map(func(x: Port): return x.value)
+		else:
+			return extra_port_values
 
 
 func _init() -> void:
 	name = "Group"
 	node_type = "group_node"
-	props_to_serialize = [&"group_id", &"group_instance_id", &"extra_ports", &"input_node_id", &"output_node_id", &"is_library"]
+	props_to_serialize = [
+		&"group_id",
+		&"group_instance_id",
+		&"extra_ports",
+		&"input_node_id",
+		&"output_node_id",
+		&"is_library",
+		&"extra_port_values",
+	]
 	appears_in_search = false
 
 
@@ -60,25 +74,35 @@ func setup_connections() -> void:
 
 
 func recalculate_ports() -> void:
+	var _values := extra_port_values.duplicate()
 	ports.clear()
 
 	for output_port: Port in output_node.get_input_ports():
-		add_output_port(
+		var port := add_output_port(
 			output_port.type,
 			output_port.label,
 			output_port.descriptor,
 			output_port.usage_type,
 		)
+		if _values.size() - 1 < port.index:
+			continue
+		
+		port.set_value(_values[port.index])
 
 	for input_port: Port in input_node.get_output_ports():
-		add_input_port(
+		var port := add_input_port(
 			input_port.type,
 			input_port.label,
 			input_port.descriptor,
 			input_port.usage_type,
 		)
+		if _values.size() - 1 < port.index:
+			continue
+		
+		port.set_value(_values[port.index])
 
 	extra_ports.clear()
+	extra_port_values.clear()
 	for port in ports:
 		extra_ports.append(port.port_type)
 
diff --git a/classes/deck/nodes/group/group_output_node.gd b/classes/deck/nodes/group/group_output_node.gd
index 7514191..70a019f 100644
--- a/classes/deck/nodes/group/group_output_node.gd
+++ b/classes/deck/nodes/group/group_output_node.gd
@@ -85,7 +85,7 @@ func _post_deck_load() -> void:
 		var gp := _belonging_to.group_descriptors.get_output_port(port.index_of_type)
 		if gp.is_empty():
 			continue
-		port.label = gp.label
+		port.label = gp.label if not gp.label.is_empty() else "Output %s" % port.index
 		port.descriptor = gp.descriptor
 		port.type = gp.type
 		port.usage_type = gp.usage_type
diff --git a/graph_node_renderer/descriptors/descriptor_container.gd b/graph_node_renderer/descriptors/descriptor_container.gd
index 8bba55d..67689e7 100644
--- a/graph_node_renderer/descriptors/descriptor_container.gd
+++ b/graph_node_renderer/descriptors/descriptor_container.gd
@@ -25,7 +25,8 @@ func set_up_from_port(port: Port, node: DeckNode, in_node: bool = true) -> void:
 	func(new_value: Variant):
 		if ignore_signal:
 			return
-		set_value(new_value)
+		if new_value != null:
+			set_value(new_value)
 		)
 	_setup(port, node)
 	if (port.port_type == DeckNode.PortType.VIRTUAL or port.type == DeckType.Types.ANY) or not in_node: