diff --git a/ui/admin/app/components/form/role/edit-grants/index.hbs b/ui/admin/app/components/form/role/edit-grants/index.hbs
index ef66b7d51..5d98f1bc6 100644
--- a/ui/admin/app/components/form/role/edit-grants/index.hbs
+++ b/ui/admin/app/components/form/role/edit-grants/index.hbs
@@ -44,7 +44,7 @@
               @color='secondary'
               {{on 'click' @cancel}}
             />
-            {{#if this.grantStringsText}}
+            {{#if this.grantStrings.length}}
               <Hds::Button
                 @text={{t 'actions.export'}}
                 @color='tertiary'
diff --git a/ui/admin/app/components/form/role/edit-grants/index.js b/ui/admin/app/components/form/role/edit-grants/index.js
index 49e62d094..b4d64dc82 100644
--- a/ui/admin/app/components/form/role/edit-grants/index.js
+++ b/ui/admin/app/components/form/role/edit-grants/index.js
@@ -37,7 +37,6 @@ export default class FormRoleEditGrantsComponent extends Component {
   exportOptionsMap = { terraform: 'terraform', nativeHCL: 'native-hcl' };
   exportOptions = Object.values(this.exportOptionsMap);
 
-  @tracked grantStringsText = (this.args.model?.grant_strings ?? []).join('\n');
   @tracked currentLineText = this.args.model?.grant_strings?.[0] ?? '';
   @tracked showExportOptionsFlyout = false;
   @tracked selectedExportOption = this.exportOptions[0];
@@ -182,7 +181,11 @@ export default class FormRoleEditGrantsComponent extends Component {
         const line = update.state.doc.lineAt(update.state.selection.main.head);
         this.currentLineText = line.text;
         if (update.docChanged) {
-          this.grantStringsText = update.state.doc.toString();
+          const text = update.state.doc.toString();
+          this.args.model.grant_strings = text
+            .split('\n')
+            .map((s) => s.trim())
+            .filter(Boolean);
         }
         // Trigger autocomplete when we're on an empty line
         if (line.text === '') {
@@ -200,11 +203,12 @@ export default class FormRoleEditGrantsComponent extends Component {
     this.#editorView?.destroy();
   }
 
+  get grantStringsText() {
+    return this.grantStrings.join('\n');
+  }
+
   get grantStrings() {
-    return this.grantStringsText
-      .split('\n')
-      .map((grantString) => grantString.trim())
-      .filter(Boolean);
+    return this.args.model?.grant_strings ?? [];
   }
 
   /**
@@ -224,7 +228,7 @@ export default class FormRoleEditGrantsComponent extends Component {
    */
   get terraformFormattedExport() {
     let formatted = `grant_strings = [ \n`;
-    this.grantStringsText.split('\n').forEach((line) => {
+    this.grantStrings.forEach((line) => {
       formatted += `  "${line}",\n`;
     });
     formatted += `]\n`;
@@ -237,7 +241,7 @@ export default class FormRoleEditGrantsComponent extends Component {
    */
   get nativeHclFormattedExport() {
     let formatted = `[ \n`;
-    this.grantStringsText.split('\n').forEach((line) => {
+    this.grantStrings.forEach((line) => {
       formatted += `  "${line}",\n`;
     });
     formatted += `]\n`;
diff --git a/ui/admin/app/routes/scopes/scope/roles/role/edit-grants.js b/ui/admin/app/routes/scopes/scope/roles/role/edit-grants.js
index 65a1d05d4..88a3fbe15 100644
--- a/ui/admin/app/routes/scopes/scope/roles/role/edit-grants.js
+++ b/ui/admin/app/routes/scopes/scope/roles/role/edit-grants.js
@@ -4,6 +4,7 @@
  */
 
 import Route from '@ember/routing/route';
+import { action } from '@ember/object';
 import { service } from '@ember/service';
 import { dropTask } from 'ember-concurrency';
 import { modelMapping } from 'api/services/sqlite';
@@ -60,4 +61,15 @@ export default class ScopesScopeRolesRoleEditGrantsRoute extends Route {
 
     return response.json();
   }
+
+  /**
+   * Stores the role model in the transition data property so that the application level hook
+   * can check for dirty attributes and trigger the confirm service.
+   * @param {object} transition
+   */
+  @action
+  async willTransition(transition) {
+    const { role } = transition.from.attributes;
+    transition.data = { model: role };
+  }
 }
diff --git a/ui/admin/tests/acceptance/roles/edit-grants-test.js b/ui/admin/tests/acceptance/roles/edit-grants-test.js
index ce4c87a47..e64340fdb 100644
--- a/ui/admin/tests/acceptance/roles/edit-grants-test.js
+++ b/ui/admin/tests/acceptance/roles/edit-grants-test.js
@@ -348,4 +348,83 @@ module('Acceptance | roles/edit grants', function (hooks) {
 
     assert.dom(selectors.AUTOCOMPLETE_TOOLTIP).isVisible();
   });
+
+  test('can discard unsaved grant changes via dialog', async function (assert) {
+    setRunOptions({
+      rules: {
+        'color-contrast': {
+          // [ember-a11y-ignore]: axe rule "color-contrast" automatically ignored on 2026-06-17
+          enabled: false,
+        },
+      },
+    });
+
+    assert.expect(3);
+    const confirmService = this.owner.lookup('service:confirm');
+    confirmService.enabled = true;
+
+    await visit(urls.editGrants);
+    await waitFor(commonSelectors.CODE_EDITOR_CM);
+
+    const newGrantString = 'ids=*;type=session;actions=list';
+    const editorElement = find(commonSelectors.CODE_EDITOR_CODE);
+    const editorView = editorElement.editor;
+    editorView.dispatch({
+      changes: {
+        from: editorView.state.doc.length,
+        insert: `\n${newGrantString}`,
+      },
+    });
+    await click(commonSelectors.HREF(urls.role));
+
+    assert.dom(commonSelectors.MODAL_WARNING).isVisible();
+
+    await click(commonSelectors.MODAL_WARNING_CONFIRM_BTN);
+
+    assert.strictEqual(currentURL(), urls.role);
+    console.log(this.server.schema.roles.find(instances.role.id));
+    assert.false(
+      this.server.schema.roles
+        .find(instances.role.id)
+        .grant_strings.includes(newGrantString),
+    );
+  });
+
+  test('can cancel discard grant changes via dialog', async function (assert) {
+    setRunOptions({
+      rules: {
+        'color-contrast': {
+          // [ember-a11y-ignore]: axe rule "color-contrast" automatically ignored on 2026-06-17
+          enabled: false,
+        },
+      },
+    });
+
+    assert.expect(3);
+    const confirmService = this.owner.lookup('service:confirm');
+    confirmService.enabled = true;
+
+    await visit(urls.editGrants);
+    await waitFor(commonSelectors.CODE_EDITOR_CM);
+
+    const newGrantString = 'ids=*;type=session;actions=list';
+    const editorElement = find(commonSelectors.CODE_EDITOR_CODE);
+    const editorView = editorElement.editor;
+    editorView.dispatch({
+      changes: {
+        from: editorView.state.doc.length,
+        insert: `\n${newGrantString}`,
+      },
+    });
+    await click(commonSelectors.HREF(urls.role));
+
+    assert.dom(commonSelectors.MODAL_WARNING).isVisible();
+
+    await click(commonSelectors.MODAL_WARNING_CANCEL_BTN);
+
+    assert.strictEqual(currentURL(), urls.editGrants);
+    assert
+      .dom(commonSelectors.CODE_EDITOR_CONTENT)
+      .includesText(newGrantString);
+  });
 });