diff --git a/home_page.js b/home_page.js
index d37e921..77bc4b6 100644
--- a/home_page.js
+++ b/home_page.js
@@ -1,4 +1,4 @@
-import { commonCss } from './lib/iobio-charts/common.js';
+import { commonCss, getDataBroker } from './lib/iobio-charts/common.js';
 import { navigateTo } from './router.js';
 import { URLInputModal } from './url_input_modal.js';
 import { LocalFileInputModal } from './local_file_input_modal.js'; 
@@ -166,6 +166,8 @@ class HomePage extends HTMLElement {
         this.attachShadow({ mode: 'open' });
         this.shadowRoot.appendChild(homePageTemplate.content.cloneNode(true));
         this.initDOMElements();
+
+        this.currentAlignmentUrl = null;
     }
 
     initDOMElements() {
@@ -178,6 +180,8 @@ class HomePage extends HTMLElement {
     }
 
     connectedCallback() {
+        this.broker = getDataBroker(this);
+
         this.localFileButton.addEventListener('click', () => this.localFileInputModal.showModal());
         // Handle the custom event from the local-file-input-modal
         this.localFileInputModal.addEventListener('local-file-loaded', async (event) => this.handleLocalFileLoaded(event));
@@ -229,6 +233,12 @@ class HomePage extends HTMLElement {
 
     // Navigate to the main content page with the URLs
     navigateToMainContent(url1, url2) {
+        if (url1 !== this.currentAlignmentUrl) {
+            this.currentAlignmentUrl = url1;
+            // reset the state
+            this.broker.reset();
+        }
+
         const queryParams = new URLSearchParams({
             'alignment-url': url1,
         });