diff --git a/Tornado3_2026Election/ViewModels/ChannelScheduleViewModel.cs b/Tornado3_2026Election/ViewModels/ChannelScheduleViewModel.cs
index 4467e8a..e924ccc 100644
--- a/Tornado3_2026Election/ViewModels/ChannelScheduleViewModel.cs
+++ b/Tornado3_2026Election/ViewModels/ChannelScheduleViewModel.cs
@@ -1113,6 +1113,17 @@ public sealed class ChannelScheduleViewModel : ObservableObject
         NotifySelectedFormatDurationStateChanged();
     }
 
+    public void RefreshSelectedFormatDuration(FormatTemplateDefinition template)
+    {
+        if (SelectedFormat is null ||
+            !string.Equals(SelectedFormat.Id, template.Id, StringComparison.Ordinal))
+        {
+            return;
+        }
+
+        ResetSelectedFormatDurationDraft();
+    }
+
     private void NotifySelectedFormatDurationStateChanged()
     {
         OnPropertyChanged(
diff --git a/Tornado3_2026Election/ViewModels/MainViewModel.cs b/Tornado3_2026Election/ViewModels/MainViewModel.cs
index af78511..44f8def 100644
--- a/Tornado3_2026Election/ViewModels/MainViewModel.cs
+++ b/Tornado3_2026Election/ViewModels/MainViewModel.cs
@@ -1432,6 +1432,7 @@ public sealed class MainViewModel : ObservableObject
     private void OnCutDurationChanged(FormatTemplateDefinition template)
     {
         SyncQueuedCutDurations(template);
+        RefreshSelectedFormatDurations(template);
         QueueAutomaticSave();
     }
 
@@ -1474,6 +1475,7 @@ public sealed class MainViewModel : ObservableObject
         {
             RefreshCutListEntries(template);
             SyncQueuedCutDurations(template);
+            RefreshSelectedFormatDurations(template);
             QueueAutomaticSave();
         }
     }
@@ -1487,6 +1489,14 @@ public sealed class MainViewModel : ObservableObject
         }
     }
 
+    private void RefreshSelectedFormatDurations(FormatTemplateDefinition template)
+    {
+        foreach (var channel in Channels)
+        {
+            channel.RefreshSelectedFormatDuration(template);
+        }
+    }
+
     private void ApplyCutDurations(IReadOnlyDictionary<string, double>? durations)
     {
         if (durations is null || durations.Count == 0)