diff --git a/Glamourer/Events/StateChanged.cs b/Glamourer/Events/StateChanged.cs
index 58dd49c..8555838 100644
--- a/Glamourer/Events/StateChanged.cs
+++ b/Glamourer/Events/StateChanged.cs
@@ -58,6 +58,8 @@ public sealed class StateChanged()
         Manual,
         Fixed,
         Ipc,
+        // Only used for CustomizeParameters.
+        Outstanding,
     }
 
     public enum Priority
diff --git a/Glamourer/State/StateListener.cs b/Glamourer/State/StateListener.cs
index 7b40d69..54b6ed0 100644
--- a/Glamourer/State/StateListener.cs
+++ b/Glamourer/State/StateListener.cs
@@ -752,6 +752,15 @@ public class StateListener : IDisposable
                 case StateChanged.Source.Ipc:
                     state.BaseData.Parameters.Set(flag, newValue);
                     model.ApplySingleParameterData(flag, state.ModelData.Parameters);
+                    break;
+                case StateChanged.Source.Outstanding:
+                    state.BaseData.Parameters.Set(flag, newValue);
+                    if (_config.UseAdvancedParameters)
+                    {
+                        model.ApplySingleParameterData(flag, state.ModelData.Parameters);
+                        state[flag] = StateChanged.Source.Manual;
+                    }
+
                     break;
             }
         }
diff --git a/Glamourer/State/StateManager.cs b/Glamourer/State/StateManager.cs
index 0eace8b..a8fc7b9 100644
--- a/Glamourer/State/StateManager.cs
+++ b/Glamourer/State/StateManager.cs
@@ -403,8 +403,12 @@ public class StateManager(
             foreach (var slot in CrestExtensions.AllRelevantSet.Where(design.DoApplyCrest))
                 _editor.ChangeCrest(state, slot, design.DesignData.Crest(slot), source, out _, key);
 
+            var paramSource = source is StateChanged.Source.Manual && redraw
+                ? StateChanged.Source.Outstanding
+                : source;
+
             foreach (var flag in CustomizeParameterExtensions.AllFlags.Where(design.DoApplyParameter))
-                _editor.ChangeParameter(state, flag, design.DesignData.Parameters[flag], source, out _, key);
+                _editor.ChangeParameter(state, flag, design.DesignData.Parameters[flag], paramSource, out _, key);
         }
 
         var actors = ApplyAll(state, redraw, false);