diff --git a/editor/inspector/editor_resource_picker.cpp b/editor/inspector/editor_resource_picker.cpp
index 88a641b5cf9..e3cf965819f 100644
--- a/editor/inspector/editor_resource_picker.cpp
+++ b/editor/inspector/editor_resource_picker.cpp
@@ -53,8 +53,26 @@ static bool _has_sub_resources(const Ref<Resource> &p_res) {
 	List<PropertyInfo> property_list;
 	p_res->get_property_list(&property_list);
 	for (const PropertyInfo &p : property_list) {
+		Variant value = p_res->get(p.name);
 		if (p.type == Variant::OBJECT && p.hint == PROPERTY_HINT_RESOURCE_TYPE && !(p.usage & PROPERTY_USAGE_NEVER_DUPLICATE) && p_res->get(p.name).get_validated_object()) {
 			return true;
+		} else if (p.type == Variant::ARRAY) {
+			Array arr = value;
+			for (Variant &var : arr) {
+				Ref<Resource> res = var;
+				if (res.is_valid()) {
+					return true;
+				}
+			}
+		} else if (p.type == Variant::DICTIONARY) {
+			Dictionary dict = value;
+			for (const KeyValue<Variant, Variant> &kv : dict) {
+				Ref<Resource> resk = kv.key;
+				Ref<Resource> resv = kv.value;
+				if (resk.is_valid() || resv.is_valid()) {
+					return true;
+				}
+			}
 		}
 	}
 	return false;
@@ -1097,9 +1115,9 @@ void EditorResourcePicker::_gather_resources_to_duplicate(const Ref<Resource> p_
 	}
 
 	if (res_name.is_empty()) {
-		p_item->set_text(0, p_resource->get_class());
+		p_item->set_text(0, _get_resource_type(p_resource));
 	} else {
-		p_item->set_text(0, vformat("%s (%s)", p_resource->get_class(), res_name));
+		p_item->set_text(0, vformat("%s (%s)", _get_resource_type(p_resource), res_name));
 	}
 
 	p_item->set_icon(0, EditorNode::get_singleton()->get_object_icon(p_resource.ptr()));
@@ -1122,7 +1140,47 @@ void EditorResourcePicker::_gather_resources_to_duplicate(const Ref<Resource> p_
 	p_resource->get_property_list(&plist);
 
 	for (const PropertyInfo &E : plist) {
-		if (!(E.usage & PROPERTY_USAGE_STORAGE) || E.type != Variant::OBJECT || E.hint != PROPERTY_HINT_RESOURCE_TYPE) {
+		if (!(E.usage & PROPERTY_USAGE_STORAGE) || (E.type != Variant::OBJECT && E.type != Variant::ARRAY && E.type != Variant::DICTIONARY)) {
+			continue;
+		}
+
+		Variant value = p_resource->get(E.name);
+		TreeItem *child = nullptr;
+
+		if (E.type == Variant::ARRAY) {
+			Array arr = value;
+			for (int i = 0; i < arr.size(); i++) {
+				Ref<Resource> res = arr[i];
+				if (res.is_valid()) {
+					child = p_item->create_child();
+					_gather_resources_to_duplicate(res, child, E.name);
+					meta = child->get_metadata(0);
+					meta.push_back(E.name);
+					meta.push_back(i); // Remember index.
+				}
+			}
+			continue;
+		} else if (E.type == Variant::DICTIONARY) {
+			Dictionary dict = value;
+			for (const KeyValue<Variant, Variant> &kv : dict) {
+				Ref<Resource> key_res = kv.key;
+				Ref<Resource> value_res = kv.value;
+				if (key_res.is_valid()) {
+					child = p_item->create_child();
+					_gather_resources_to_duplicate(key_res, child, E.name);
+					meta = child->get_metadata(0);
+					meta.push_back(E.name);
+					meta.push_back(key_res);
+				}
+				if (value_res.is_valid()) {
+					child = p_item->create_child();
+					_gather_resources_to_duplicate(value_res, child, E.name);
+					meta = child->get_metadata(0);
+					meta.push_back(E.name);
+					meta.push_back(value_res);
+					meta.push_back(kv.key);
+				}
+			}
 			continue;
 		}
 
@@ -1130,13 +1188,11 @@ void EditorResourcePicker::_gather_resources_to_duplicate(const Ref<Resource> p_
 		if (res.is_null()) {
 			continue;
 		}
-
-		TreeItem *child = p_item->create_child();
+		child = p_item->create_child();
 		_gather_resources_to_duplicate(res, child, E.name);
-
 		meta = child->get_metadata(0);
 		// Remember property name.
-		meta.append(E.name);
+		meta.push_back(E.name);
 
 		if ((E.usage & PROPERTY_USAGE_NEVER_DUPLICATE)) {
 			// The resource can't be duplicated, but make it appear on the list anyway.
@@ -1161,10 +1217,47 @@ void EditorResourcePicker::_duplicate_selected_resources() {
 		if (meta.size() == 1) { // Root.
 			edited_resource = unique_resource;
 			_resource_changed();
-		} else {
-			Array parent_meta = item->get_parent()->get_metadata(0);
-			Ref<Resource> parent = parent_meta[0];
+			continue;
+		}
+		Array parent_meta = item->get_parent()->get_metadata(0);
+		Ref<Resource> parent = parent_meta[0];
+		Variant::Type property_type = parent->get(meta[1]).get_type();
+
+		if (property_type == Variant::OBJECT) {
 			parent->set(meta[1], unique_resource);
+			continue;
+		}
+
+		Variant property = parent->get(meta[1]);
+
+		if (!parent_meta.has(property)) {
+			property = property.duplicate();
+			parent->set(meta[1], property);
+			parent_meta.push_back(property); // Append Duplicated Type so we can check if it's already been duplicated.
+		}
+
+		if (property_type == Variant::ARRAY) {
+			Array arr = property;
+			arr[meta[2]] = unique_resource;
+			continue;
+		}
+
+		Dictionary dict = property;
+		LocalVector<Variant> keys = dict.get_key_list();
+
+		if (meta[2].get_type() == Variant::OBJECT) {
+			if (keys.has(meta[2])) {
+				//It's a key.
+				dict[unique_resource] = dict[meta[2]];
+				dict.erase(meta[2]);
+				parent_meta.push_back(unique_resource);
+			} else {
+				// If key has been erased, use last appended Resource key instead.
+				Variant key = keys.has(meta[3]) ? meta[3] : parent_meta.back();
+				dict[key] = unique_resource;
+			}
+		} else {
+			dict[meta[2]] = unique_resource;
 		}
 	}
 }