diff --git a/packages/app-core/test-kit/index.ts b/packages/app-core/test-kit/index.ts
index 516c07f6..31146633 100644
--- a/packages/app-core/test-kit/index.ts
+++ b/packages/app-core/test-kit/index.ts
@@ -22,6 +22,7 @@ export class AppDefDriver<T> {
     private fs: IMemFileSystem;
     private moduleSystem: ICommonJsModuleSystem;
     private dirListeners: Array<DirListenerObj> = [];
+    private manifestListeners: Set<(manifest: IAppManifest<T>) => void> = new Set();
     private fileListeners: Record<string, Set<(contents: string | null) => void>> = {};
     private exportsListeners: Record<string, Set<(exportNames: string[]) => void>> = {};
     private lastManifest: IAppManifest<T> | null = null;
@@ -62,6 +63,7 @@ export class AppDefDriver<T> {
             fsApi: this.fsApi,
             onManifestUpdate: (manifest) => {
                 this.lastManifest = manifest;
+                this.dispatchManifestUpdate();
             },
         });
         this.lastManifest = manifest;
@@ -121,9 +123,20 @@ export class AppDefDriver<T> {
             movedFilePath,
         });
     }
+    addManifestListener(cb: (manifest: IAppManifest<T>) => void) {
+        this.manifestListeners.add(cb);
+    }
+    removeManifestListener(cb: (manifest: IAppManifest<T>) => void) {
+        this.manifestListeners.delete(cb);
+    }
+    private dispatchManifestUpdate() {
+        for (const listener of this.manifestListeners) {
+            listener(this.lastManifest!);
+        }
+    }
     async render({uri = '/'}: {uri?: string} = {}) {
         const { app } = this.options;
-        const { fsApi, importModule, lastManifest } = this;
+        const { fsApi, importModule } = this;
             
         if (!app.callServerMethod) {
             throw new Error('app.callServerMethod is not defined');
@@ -142,7 +155,7 @@ export class AppDefDriver<T> {
                 );
             },
             importModule: this.importModule,
-            manifest: lastManifest!,
+            manifest: this.lastManifest!,
             onCaughtError() {/**/},
             setUri(_uri: string) {
                 // ToDo: implement
@@ -150,15 +163,23 @@ export class AppDefDriver<T> {
             uri,
         });
         const unmount = await app.render(container, createProps(uri));
+        let lastUri = uri;
+        const rerender = ({uri = '/'}: {uri?: string} = {})=>{
+            lastUri = uri;
+            return app.render(container, createProps(uri));
+        }
+        const manifestListener = () => {
+            void rerender({uri: lastUri});
+        };
+        this.addManifestListener(manifestListener);
         return {
-            dispose() {
+            dispose: ()=> {
                 unmount();
                 container.remove();
+                this.removeManifestListener(manifestListener)
             },
             container,
-            rerender({uri = '/'}: {uri?: string} = {}) {
-                return app.render(container, createProps(uri));
-            }
+            rerender
         };
     }
     dispose() {
diff --git a/packages/define-remix-app/src/manifest-to-router.tsx b/packages/define-remix-app/src/manifest-to-router.tsx
index 1a66d045..bda31d2a 100644
--- a/packages/define-remix-app/src/manifest-to-router.tsx
+++ b/packages/define-remix-app/src/manifest-to-router.tsx
@@ -130,7 +130,7 @@ export const fileToRoute = (
     prevUri: { current: string },
     callServerMethod: (filePath: string, methodName: string, args: unknown[]) => Promise<unknown>,
 ): RouteObject => {
-    const key = filePath;
+    const key = filePath + "#" + exportNames.join(',');
     let module = loadedModules.get(key);
     if (!module) {
         module = nonMemoFileToRoute(
diff --git a/packages/define-remix-app/test/define-remix.spec.ts b/packages/define-remix-app/test/define-remix.spec.ts
index ed6519dd..ae308d33 100644
--- a/packages/define-remix-app/test/define-remix.spec.ts
+++ b/packages/define-remix-app/test/define-remix.spec.ts
@@ -1200,7 +1200,7 @@ describe('define-remix', () => {
             it('should render links returned by the links function', async () => {
                 const { driver } = await getInitialManifest({
                     [rootPath]: rootWithLayout2,
-                    [indexPath]: pageWithLinks,
+                    [indexPath]: pageWithLinks('Home'),
                 });
 
                 const { dispose, container } = await driver.render({ uri: '' });
@@ -1215,6 +1215,35 @@ describe('define-remix', () => {
               
                 dispose();
             });
+            it('should support having the links function added and removed', async () => {
+                const { driver } = await getInitialManifest({
+                    [rootPath]: rootWithLayout2,
+                    [indexPath]: namedPage('Home'),
+                });
+
+                const { dispose, container } = await driver.render({ uri: '' });
+
+                await expect(() => container.textContent)
+                    .retry()
+                    .to.include('Layout|App|Home');
+
+
+                const link = container.querySelector('link')
+                expect(link).to.equal(null);
+
+                driver.addOrUpdateFile(indexPath, pageWithLinks('HomeUpdated'));
+
+                
+                await expect(() => container.textContent)
+                    .retry()
+                    .to.include('Layout|App|HomeUpdated');
+
+                const updatedLink = container.querySelector('link')
+                expect(updatedLink?.getAttribute('href'))
+                    .to.include('some.css');
+              
+                dispose();
+            });
         })
     });
 });
diff --git a/packages/define-remix-app/test/test-cases/roots.ts b/packages/define-remix-app/test/test-cases/roots.ts
index 9866156a..0d285de0 100644
--- a/packages/define-remix-app/test/test-cases/roots.ts
+++ b/packages/define-remix-app/test/test-cases/roots.ts
@@ -77,7 +77,8 @@ export const simpleLayout = transformTsx(`
         );
     }
 `);
-export const pageWithLinks = transformTsx(`
+
+export const pageWithLinks =(name: string)=> transformTsx(`
     import React from 'react';
     import {
         Outlet,
@@ -90,7 +91,7 @@ export const pageWithLinks = transformTsx(`
     }
     export default function Layout() {
         return (
-           <div>Home|<Outlet /></div>
+           <div>${name}|<Outlet /></div>
         );
     }
 `);