diff --git a/app/my_practice/views/calendar_views.py b/app/my_practice/views/calendar_views.py
index 3c59366..61fc995 100644
--- a/app/my_practice/views/calendar_views.py
+++ b/app/my_practice/views/calendar_views.py
@@ -228,13 +228,24 @@ def calendar_approval_queue(request: HttpRequest) -> HttpResponse:
         session__duration__lte=OuterRef("duration_minutes") + 5,
     )
 
+    # Stale count: already-billed events still sitting as pending (shown separately, not in list)
+    stale_count = (
+        PendingCalendarEvent.objects.filter(
+            practice=practice,
+            status=PendingCalendarEvent.Status.PENDING,
+        )
+        .annotate(is_duplicate=Exists(duplicate_subquery))
+        .filter(is_duplicate=True)
+        .count()
+    )
+
     pending_events = (
         PendingCalendarEvent.objects.filter(
             practice=practice,
             status=PendingCalendarEvent.Status.PENDING,
         )
         .select_related("matched_client", "suggested_service_type")
-        .annotate(is_duplicate=Exists(duplicate_subquery))
+        .exclude(Exists(duplicate_subquery))
         .order_by("matched_client__client_code", "event_date")
     )
 
@@ -251,7 +262,6 @@ def calendar_approval_queue(request: HttpRequest) -> HttpResponse:
                 "month": month,
                 "events": events,
                 "count": len(events),
-                "duplicate_count": sum(1 for e in events if e.is_duplicate),
             }
         )
 
@@ -271,7 +281,6 @@ def calendar_approval_queue(request: HttpRequest) -> HttpResponse:
         group["invoices"] = draft_invoice_map.get(group["client"].pk, []) if group["client"] else []
 
     total_pending = pending_events.count()
-    total_duplicates = sum(1 for e in pending_events if e.is_duplicate)
 
     return render(
         request,
@@ -279,7 +288,7 @@ def calendar_approval_queue(request: HttpRequest) -> HttpResponse:
         {
             "grouped": grouped,
             "total_pending": total_pending,
-            "total_duplicates": total_duplicates,
+            "stale_count": stale_count,
         },
     )
 
diff --git a/app/my_practice/views/invoice_views.py b/app/my_practice/views/invoice_views.py
index 2a11b6f..926596c 100644
--- a/app/my_practice/views/invoice_views.py
+++ b/app/my_practice/views/invoice_views.py
@@ -11,7 +11,7 @@
 from django.contrib import messages
 from django.contrib.auth.decorators import login_required
 from django.db import transaction
-from django.db.models import Case, Count, DecimalField, F, Q, QuerySet, Sum, When
+from django.db.models import Case, Count, DecimalField, Exists, F, OuterRef, Q, QuerySet, Sum, When
 from django.shortcuts import get_object_or_404, redirect, render
 from django.urls import reverse, reverse_lazy
 from django.utils.html import format_html
@@ -720,14 +720,25 @@ def _gather_billing_data(practice, year, month_num):
     ):
         unbilled_sessions_by_client.setdefault(session.client_id, []).append(session)
 
+    already_billed_subquery = InvoiceItem.objects.filter(
+        invoice__client=OuterRef("matched_client"),
+        session__session_date=OuterRef("event_date"),
+        session__duration__gte=OuterRef("duration_minutes") - 5,
+        session__duration__lte=OuterRef("duration_minutes") + 5,
+    ).exclude(invoice__status=Invoice.Status.CANCELLED)
+
     pending_by_client: dict[int, int] = {}
-    for row in PendingCalendarEvent.objects.filter(
-        practice=practice,
-        event_date__year=year,
-        event_date__month=month_num,
-        status=PendingCalendarEvent.Status.PENDING,
-        matched_client__isnull=False,
-    ).values("matched_client_id"):
+    for row in (
+        PendingCalendarEvent.objects.filter(
+            practice=practice,
+            event_date__year=year,
+            event_date__month=month_num,
+            status=PendingCalendarEvent.Status.PENDING,
+            matched_client__isnull=False,
+        )
+        .exclude(Exists(already_billed_subquery))
+        .values("matched_client_id")
+    ):
         cid = row["matched_client_id"]
         pending_by_client[cid] = pending_by_client.get(cid, 0) + 1
 
diff --git a/app/templates/my_practice/calendar_approval_queue.html b/app/templates/my_practice/calendar_approval_queue.html
index db104ad..ca43b75 100644
--- a/app/templates/my_practice/calendar_approval_queue.html
+++ b/app/templates/my_practice/calendar_approval_queue.html
@@ -27,16 +27,16 @@
     </span>
 </div>
 
-{% if total_duplicates > 0 %}
-<div class="alert-box warning alert-box--flex mb-3">
+{% if stale_count > 0 %}
+<div class="alert-box info alert-box--flex mb-3">
     <span>
-        <strong>⚠️ {{ total_duplicates }} bereits importiert</strong><br>
+        <strong>ℹ️ {{ stale_count }} Termin{{ stale_count|pluralize:"e" }} ausgeblendet</strong><br>
         <span class="alert-box__hint">
-            Diese Termine haben bereits passende Rechnungspositionen und können übersprungen werden.
+            Diese Termine haben bereits passende Rechnungspositionen und werden nicht angezeigt.
         </span>
     </span>
-    <button type="button" class="btn btn-danger-solid" id="skip-duplicates-btn">
-        🚫 Alle Duplikate überspringen
+    <button type="button" class="btn btn-secondary btn-sm" id="skip-duplicates-btn">
+        🚫 Als erledigt markieren
     </button>
 </div>
 {% endif %}
@@ -117,9 +117,6 @@ <h3 class="queue-group-header__title">
                     {% endif %}
                 </td>
                 <td>
-                    {% if event.is_duplicate %}
-                    <span class="badge-duplicate">✓ vorhanden</span>
-                    {% endif %}
                     <button type="button" class="btn btn-skip skip-event-btn"
                             data-event-id="{{ event.pk }}"
                             title="Termin überspringen">