diff --git a/src/lib/server/order-delivery-note-link-service.test.ts b/src/lib/server/order-delivery-note-link-service.test.ts
index 9cc874d..178a660 100644
--- a/src/lib/server/order-delivery-note-link-service.test.ts
+++ b/src/lib/server/order-delivery-note-link-service.test.ts
@@ -307,6 +307,65 @@ describe("suggestDeliveryNoteForOrder", () => {
 
     expect(result.best).toBeNull();
   });
+
+  it("matches a delivery note at exactly 60 days old (boundary positive control)", async () => {
+    // 60 days before "now" 2026-08-30 = 2026-07-01
+    const orderItem = { description: "M16x50 Bolt", quantity: 300 };
+    const dnItem = { description: "M16x50 Bolt", quantity: 300, order: "other-order" };
+
+    mockAdminPb(makePb({
+      [ORDERS]: {
+        getOne: vi.fn().mockResolvedValue({ id: "ord1", company: "co1" }),
+        update: vi.fn().mockResolvedValue({}),
+      },
+      [ORDER_ITEMS]: {
+        getFullList: vi.fn()
+          .mockResolvedValueOnce([orderItem])
+          .mockResolvedValueOnce([dnItem]),
+      },
+      [DELIVERY_NOTES]: {
+        getFullList: vi.fn().mockResolvedValue([
+          {
+            id: "dn-edge-in",
+            delivery_note_number: "DN-EDGE-IN",
+            company: "co1",
+            status: "completed",
+            created: "2026-07-01 12:00:00.000Z", // exactly 60 days back
+            order: "other-order",
+          },
+        ]),
+      },
+    }));
+
+    const result = await suggestDeliveryNoteForOrder("ord1");
+
+    expect(result.best?.deliveryNoteId).toBe("dn-edge-in");
+  });
+
+  it("does not match a delivery note just past the 60-day window (61 days old)", async () => {
+    // 61 days before "now" 2026-08-30 = 2026-06-30
+    const orderItem = { description: "M16x50 Bolt", quantity: 300 };
+    const dnItem = { description: "M16x50 Bolt", quantity: 300, order: "other-order" };
+
+    mockAdminPb(makePb({
+      [ORDERS]: {
+        getOne: vi.fn().mockResolvedValue({ id: "ord1", company: "co1" }),
+        update: vi.fn().mockResolvedValue({}),
+      },
+      [ORDER_ITEMS]: {
+        getFullList: vi.fn()
+          .mockResolvedValueOnce([orderItem])
+          .mockResolvedValueOnce([dnItem]),
+      },
+      [DELIVERY_NOTES]: {
+        getFullList: vi.fn().mockResolvedValue([]), // 61 days = filtered out by cutoff
+      },
+    }));
+
+    const result = await suggestDeliveryNoteForOrder("ord1");
+
+    expect(result.best).toBeNull();
+  });
 });
 
 /* ============================================================================
diff --git a/src/lib/server/order-delivery-note-link-service.ts b/src/lib/server/order-delivery-note-link-service.ts
index d858e20..a7979c0 100644
--- a/src/lib/server/order-delivery-note-link-service.ts
+++ b/src/lib/server/order-delivery-note-link-service.ts
@@ -34,11 +34,18 @@ const DELIVERY_NOTES_COLLECTION = "delivery_notes";
 const QUOTES_COLLECTION = "quotes";
 const QUOTE_ITEMS_COLLECTION = "quote_items";
 
+/** Maximum age (in days) of a delivery-note candidate considered for
+ *  repeat matching. Beyond this window, even an exact-line match is
+ *  treated as a coincidence, not a repeat order. */
+const WINDOW_DAYS = 60;
+
 // Per 2026-08-30 business decision: match against a DN of ANY status,
-// including `cancelled` — the prior exclusion missed real repeat orders
-// where the original delivery's DN had been cancelled for reasons
-// unrelated to whether goods went out. A 60-day candidate window
-// (computed below) bounds the search space instead.
+// including `cancelled` (previously excluded along with a hardcoded
+// allowlist of "active" statuses — see git history) — the prior
+// exclusion missed real repeat orders where the original delivery's DN
+// had been cancelled for reasons unrelated to whether goods went out.
+// A 60-day candidate window (computed below) bounds the search space
+// instead.
 
 function esc(s: string): string {
   return (s || "").replace(/"/g, '\\"');
@@ -94,8 +101,8 @@ export async function suggestDeliveryNoteForOrder(
     quantity: Number(r.quantity) || 0,
   }));
 
-  const WINDOW_DAYS = 60;
-  const cutoff = new Date(Date.now() - WINDOW_DAYS * 24 * 60 * 60 * 1000);
+  const WINDOW_MS = WINDOW_DAYS * 24 * 60 * 60 * 1000;
+  const cutoff = new Date(Date.now() - WINDOW_MS);
   const cutoffStr = cutoff.toISOString().replace("T", " ");
 
   const candidates = await pb