diff --git a/docs/release-control/v6/internal/subsystems/unified-resources.md b/docs/release-control/v6/internal/subsystems/unified-resources.md
index 287a6ff91..862b7bf76 100644
--- a/docs/release-control/v6/internal/subsystems/unified-resources.md
+++ b/docs/release-control/v6/internal/subsystems/unified-resources.md
@@ -209,6 +209,10 @@ The resource drawer now applies the same rule to its investigation-context
 governance block: the default posture remains part of the canonical policy
 contract, but the drawer only surfaces the governance section when the policy
 state is non-default or otherwise consequential to operator understanding.
+The drawer investigation summary line also follows that boundary now: default
+`Cloud Summary` routing is not repeated in the collapsed summary text, while
+non-default routing still appears when it materially changes how the operator
+should read the resource.
 The shared routing policy itself now stays intentionally minimal: it carries
 only the routing scope and the redaction hints derived from canonical
 sensitivity, and the cloud-summary decision is derived from that scope
diff --git a/frontend-modern/src/components/Infrastructure/__tests__/ResourceDetailDrawer.history.test.tsx b/frontend-modern/src/components/Infrastructure/__tests__/ResourceDetailDrawer.history.test.tsx
index 4c127257f..8b8e4f53e 100644
--- a/frontend-modern/src/components/Infrastructure/__tests__/ResourceDetailDrawer.history.test.tsx
+++ b/frontend-modern/src/components/Infrastructure/__tests__/ResourceDetailDrawer.history.test.tsx
@@ -370,10 +370,12 @@ describe('ResourceDetailDrawer change history section', () => {
     render(() => <ResourceDetailDrawer resource={resource} />);
 
     await screen.findByText('Investigation context');
+    expect(screen.queryByText('Routing Cloud Summary')).toBeNull();
     fireEvent.click(screen.getByRole('button', { name: 'Show context' }));
 
     expect(screen.queryByText('Data Governance')).toBeNull();
     expect(screen.queryByText('AI-Safe Summary')).toBeNull();
+    expect(screen.queryByText('Routing Cloud Summary')).toBeNull();
   });
 
   it('keeps details label-first without a summary sentence', () => {
diff --git a/frontend-modern/src/components/Infrastructure/useResourceDetailDrawerDerivedState.ts b/frontend-modern/src/components/Infrastructure/useResourceDetailDrawerDerivedState.ts
index 9fc9f4331..cc9fc8d53 100644
--- a/frontend-modern/src/components/Infrastructure/useResourceDetailDrawerDerivedState.ts
+++ b/frontend-modern/src/components/Infrastructure/useResourceDetailDrawerDerivedState.ts
@@ -202,7 +202,7 @@ export const useResourceDetailDrawerDerivedState = (
         `${resourceCorrelations().length} correlation${resourceCorrelations().length === 1 ? '' : 's'}`,
       );
     }
-    if (resource.policy?.routing.scope) {
+    if (resource.policy?.routing.scope && !hasDefaultResourcePolicyPosture(resource.policy)) {
       summary.push(`Routing ${getResourceRoutingScopeLabel(resource.policy.routing.scope)}`);
     }