diff --git a/server/src/project.rs b/server/src/project.rs
index d99d3f15..b5477d77 100644
--- a/server/src/project.rs
+++ b/server/src/project.rs
@@ -40,7 +40,7 @@ enum SourceProjectNode {
 impl SourceProjectNode {
     pub fn into_project_node(self, project_file_location: &Path) -> ProjectNode {
         match self {
-            SourceProjectNode::Instance { class_name, mut children, properties, .. } => {
+            SourceProjectNode::Instance { class_name, mut children, properties, ignore_unknown } => {
                 let mut new_children = HashMap::new();
 
                 for (node_name, node) in children.drain() {
@@ -51,6 +51,9 @@ impl SourceProjectNode {
                     class_name,
                     children: new_children,
                     properties,
+                    config: InstanceProjectNodeConfig {
+                        ignore_unknown,
+                    },
                 })
             },
             SourceProjectNode::SyncPoint { path: source_path } => {
@@ -126,6 +129,11 @@ pub struct ProjectInitError;
 #[fail(display = "Project save error")]
 pub struct ProjectSaveError;
 
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct InstanceProjectNodeConfig {
+    pub ignore_unknown: bool,
+}
+
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 #[serde(tag = "type")]
 pub enum ProjectNode {
@@ -139,7 +147,7 @@ pub struct InstanceProjectNode {
     pub class_name: String,
     pub children: HashMap<String, ProjectNode>,
     pub properties: HashMap<String, RbxValue>,
-    // ignore_unknown: bool,
+    pub config: InstanceProjectNodeConfig,
 }
 
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
diff --git a/server/src/rbx_session.rs b/server/src/rbx_session.rs
index 119965ea..97bb6b50 100644
--- a/server/src/rbx_session.rs
+++ b/server/src/rbx_session.rs
@@ -9,7 +9,7 @@ use std::{
 use rbx_tree::{RbxTree, RbxValue, RbxId};
 
 use crate::{
-    project::{Project, ProjectNode, InstanceProjectNode},
+    project::{Project, ProjectNode, InstanceProjectNode, InstanceProjectNodeConfig},
     message_queue::MessageQueue,
     imfs::{Imfs, ImfsItem, ImfsFile},
     path_map::PathMap,
@@ -19,6 +19,7 @@ use crate::{
 pub struct RbxSession {
     tree: RbxTree,
     path_map: PathMap<RbxId>,
+    config_map: HashMap<RbxId, InstanceProjectNodeConfig>,
     message_queue: Arc<MessageQueue<InstanceChanges>>,
     imfs: Arc<Mutex<Imfs>>,
     project: Arc<Project>,
@@ -31,15 +32,17 @@ impl RbxSession {
         message_queue: Arc<MessageQueue<InstanceChanges>>,
     ) -> RbxSession {
         let mut path_map = PathMap::new();
+        let mut config_map = HashMap::new();
 
         let tree = {
             let temp_imfs = imfs.lock().unwrap();
-            construct_initial_tree(&project, &temp_imfs, &mut path_map)
+            construct_initial_tree(&project, &temp_imfs, &mut path_map, &mut config_map)
         };
 
         RbxSession {
             tree,
             path_map,
+            config_map,
             message_queue,
             imfs,
             project,
@@ -60,7 +63,7 @@ impl RbxSession {
             let snapshot = snapshot_instances_from_imfs(&imfs, &closest_path)
                 .expect("Could not generate instance snapshot");
 
-            reconcile_subtree(&mut self.tree, instance_id, &snapshot, &mut self.path_map, &mut changes);
+            reconcile_subtree(&mut self.tree, instance_id, &snapshot, &mut self.path_map, &mut self.config_map, &mut changes);
         }
 
         if !changes.is_empty() {
@@ -124,17 +127,23 @@ impl RbxSession {
     pub fn get_tree(&self) -> &RbxTree {
         &self.tree
     }
+
+    pub fn get_config_map(&self) -> &HashMap<RbxId, InstanceProjectNodeConfig> {
+        &self.config_map
+    }
 }
 
 pub fn construct_oneoff_tree(project: &Project, imfs: &Imfs) -> RbxTree {
     let mut path_map = PathMap::new();
-    construct_initial_tree(project, imfs, &mut path_map)
+    let mut config_map = HashMap::new();
+    construct_initial_tree(project, imfs, &mut path_map, &mut config_map)
 }
 
 fn construct_initial_tree(
     project: &Project,
     imfs: &Imfs,
     path_map: &mut PathMap<RbxId>,
+    config_map: &mut HashMap<RbxId, InstanceProjectNodeConfig>,
 ) -> RbxTree {
     let snapshot = construct_project_node(
         imfs,
@@ -143,7 +152,7 @@ fn construct_initial_tree(
     );
 
     let mut changes = InstanceChanges::default();
-    let tree = reify_root(&snapshot, path_map, &mut changes);
+    let tree = reify_root(&snapshot, path_map, config_map, &mut changes);
 
     tree
 }
@@ -185,6 +194,7 @@ fn construct_instance_node<'a>(
         properties: HashMap::new(),
         children,
         source_path: None,
+        config: Some(project_node.config.clone()),
     }
 }
 
@@ -243,6 +253,7 @@ fn snapshot_instances_from_imfs<'a>(imfs: &'a Imfs, imfs_path: &Path) -> Option<
                 properties,
                 children: Vec::new(),
                 source_path: Some(file.path.clone()),
+                config: None,
             })
         },
         ImfsItem::Directory(directory) => {
@@ -257,6 +268,7 @@ fn snapshot_instances_from_imfs<'a>(imfs: &'a Imfs, imfs_path: &Path) -> Option<
                     properties: HashMap::new(),
                     children: Vec::new(),
                     source_path: Some(directory.path.clone()),
+                    config: None,
                 }
             };
 
diff --git a/server/src/rbx_snapshot.rs b/server/src/rbx_snapshot.rs
index f81161d7..842c3f6c 100644
--- a/server/src/rbx_snapshot.rs
+++ b/server/src/rbx_snapshot.rs
@@ -7,7 +7,10 @@ use std::{
 
 use rbx_tree::{RbxTree, RbxId, RbxInstance, RbxValue};
 
-use crate::path_map::PathMap;
+use crate::{
+    path_map::PathMap,
+    project::InstanceProjectNodeConfig,
+};
 
 #[derive(Debug, Clone, Default, Serialize, Deserialize)]
 pub struct InstanceChanges {
@@ -28,11 +31,13 @@ pub struct RbxSnapshotInstance<'a> {
     pub properties: HashMap<String, RbxValue>,
     pub children: Vec<RbxSnapshotInstance<'a>>,
     pub source_path: Option<PathBuf>,
+    pub config: Option<InstanceProjectNodeConfig>,
 }
 
 pub fn reify_root(
     snapshot: &RbxSnapshotInstance,
     path_map: &mut PathMap<RbxId>,
+    config_map: &mut HashMap<RbxId, InstanceProjectNodeConfig>,
     changes: &mut InstanceChanges,
 ) -> RbxTree {
     let instance = reify_core(snapshot);
@@ -43,10 +48,14 @@ pub fn reify_root(
         path_map.insert(source_path.clone(), root_id);
     }
 
+    if let Some(config) = &snapshot.config {
+        config_map.insert(root_id, config.clone());
+    }
+
     changes.added.insert(root_id);
 
     for child in &snapshot.children {
-        reify_subtree(child, &mut tree, root_id, path_map, changes);
+        reify_subtree(child, &mut tree, root_id, path_map, config_map, changes);
     }
 
     tree
@@ -57,6 +66,7 @@ pub fn reify_subtree(
     tree: &mut RbxTree,
     parent_id: RbxId,
     path_map: &mut PathMap<RbxId>,
+    config_map: &mut HashMap<RbxId, InstanceProjectNodeConfig>,
     changes: &mut InstanceChanges,
 ) {
     let instance = reify_core(snapshot);
@@ -66,10 +76,14 @@ pub fn reify_subtree(
         path_map.insert(source_path.clone(), id);
     }
 
+    if let Some(config) = &snapshot.config {
+        config_map.insert(id, config.clone());
+    }
+
     changes.added.insert(id);
 
     for child in &snapshot.children {
-        reify_subtree(child, tree, id, path_map, changes);
+        reify_subtree(child, tree, id, path_map, config_map, changes);
     }
 }
 
@@ -78,13 +92,14 @@ pub fn reconcile_subtree(
     id: RbxId,
     snapshot: &RbxSnapshotInstance,
     path_map: &mut PathMap<RbxId>,
+    config_map: &mut HashMap<RbxId, InstanceProjectNodeConfig>,
     changes: &mut InstanceChanges,
 ) {
     if reconcile_instance_properties(tree.get_instance_mut(id).unwrap(), snapshot) {
         changes.updated.insert(id);
     }
 
-    reconcile_instance_children(tree, id, snapshot, path_map, changes);
+    reconcile_instance_children(tree, id, snapshot, path_map, config_map, changes);
 }
 
 fn reify_core(snapshot: &RbxSnapshotInstance) -> RbxInstance {
@@ -165,6 +180,7 @@ fn reconcile_instance_children(
     id: RbxId,
     snapshot: &RbxSnapshotInstance,
     path_map: &mut PathMap<RbxId>,
+    config_map: &mut HashMap<RbxId, InstanceProjectNodeConfig>,
     changes: &mut InstanceChanges,
 ) {
     let children_ids = tree.get_instance(id).unwrap().get_children_ids().to_vec();
@@ -195,18 +211,19 @@ fn reconcile_instance_children(
     }
 
     for child_snapshot in &children_to_add {
-        reify_subtree(child_snapshot, tree, id, path_map, changes);
+        reify_subtree(child_snapshot, tree, id, path_map, config_map, changes);
     }
 
     for child_id in &children_to_remove {
         if let Some(subtree) = tree.remove_instance(*child_id) {
             for id in subtree.iter_all_ids() {
+                config_map.remove(&id);
                 changes.removed.insert(id);
             }
         }
     }
 
     for (child_id, child_snapshot) in &children_to_update {
-        reconcile_subtree(tree, *child_id, child_snapshot, path_map, changes);
+        reconcile_subtree(tree, *child_id, child_snapshot, path_map, config_map, changes);
     }
 }
\ No newline at end of file
diff --git a/server/src/web.rs b/server/src/web.rs
index 1273ffff..0985a975 100644
--- a/server/src/web.rs
+++ b/server/src/web.rs
@@ -15,7 +15,7 @@ use rbx_tree::{RbxId, RootedRbxInstance};
 use crate::{
     session::Session,
     session_id::SessionId,
-    project::Project,
+    project::InstanceProjectNodeConfig,
     rbx_snapshot::InstanceChanges,
 };
 
@@ -26,7 +26,7 @@ pub struct ServerInfoResponse<'a> {
     pub server_version: &'a str,
     pub protocol_version: u64,
     pub root_instance_id: RbxId,
-    pub project: Cow<'a, Project>,
+    pub config_map: Cow<'a, HashMap<RbxId, InstanceProjectNodeConfig>>,
 }
 
 #[derive(Debug, Serialize, Deserialize)]
@@ -78,7 +78,7 @@ impl Server {
                     protocol_version: 2,
                     session_id: self.session.session_id,
                     root_instance_id: tree.get_root_id(),
-                    project: Cow::Borrowed(&self.session.project),
+                    config_map: Cow::Borrowed(rbx_session.get_config_map()),
                 })
             },