diff --git a/SeaHaven.Services/Helpers/WorkOrderBoardFieldMutations.cs b/SeaHaven.Services/Helpers/WorkOrderBoardFieldMutations.cs
index c3a59a0..b9f785f 100644
--- a/SeaHaven.Services/Helpers/WorkOrderBoardFieldMutations.cs
+++ b/SeaHaven.Services/Helpers/WorkOrderBoardFieldMutations.cs
@@ -62,21 +62,7 @@ namespace SeaHaven.Services.Helpers
         }
 
         public static List<BoardFieldChange> ApplyAutoScheduleSideEffects(WorkOrder workOrder)
-        {
-            var changes = new List<BoardFieldChange>();
-            if (!WorkOrderBoardMutationRules.ShouldAutoSchedule(
-                    workOrder.LifecycleStatus,
-                    workOrder.ScheduledDate,
-                    workOrder.AssignTo,
-                    workOrder.ScheduleWeekOnly))
-                return changes;
-
-            var old = workOrder.LifecycleStatus?.ToString();
-            workOrder.LifecycleStatus = LifecycleStatus.Scheduled;
-            workOrder.Status = WorkOrderDerivedFields.GetLifecycleStatusLabel(LifecycleStatus.Scheduled);
-            changes.Add(BoardFieldChange.StatusChanged("LifecycleStatus", old, LifecycleStatus.Scheduled.ToString()));
-            return changes;
-        }
+            => WorkOrderDerivedFields.ApplyLifecycleFromSchedule(workOrder);
 
         public static BoardFieldChange ApplyApptTime(WorkOrder workOrder, Dispatch dispatch, string? value)
         {
diff --git a/SeaHavenIndustries.Tests/WorkOrderBoardFieldMutationsTests.cs b/SeaHavenIndustries.Tests/WorkOrderBoardFieldMutationsTests.cs
index aa83201..61eab70 100644
--- a/SeaHavenIndustries.Tests/WorkOrderBoardFieldMutationsTests.cs
+++ b/SeaHavenIndustries.Tests/WorkOrderBoardFieldMutationsTests.cs
@@ -1,4 +1,5 @@
 using Data.SeaHavenIndustries;
+using Data.SeaHavenIndustries.Enums;
 using SeaHaven.Services.Helpers;
 
 namespace SeaHavenIndustries.Tests;
@@ -50,4 +51,33 @@ public class WorkOrderBoardFieldMutationsTests
         Assert.Equal(new DateTime(2026, 6, 25, 9, 0, 0), workOrder.ScheduledStart);
         Assert.Equal(new DateTime(2026, 6, 25, 11, 0, 0), workOrder.ScheduledEnd);
     }
+
+    [Fact]
+    public void ApplyScheduledDate_IncompleteWithoutAssignee_PromotesToScheduled()
+    {
+        var workOrder = new WorkOrder { LifecycleStatus = LifecycleStatus.Incomplete };
+
+        var changes = WorkOrderBoardFieldMutations.ApplyScheduledDate(
+            workOrder,
+            new DateTime(2026, 6, 25));
+
+        Assert.Equal(LifecycleStatus.Scheduled, workOrder.LifecycleStatus);
+        Assert.Contains(changes, c => c.Action == AuditActionType.StatusChanged);
+    }
+
+    [Fact]
+    public void ApplyScheduledDate_ClearsScheduled_DemotesToPending()
+    {
+        var workOrder = new WorkOrder
+        {
+            LifecycleStatus = LifecycleStatus.Scheduled,
+            ScheduledDate = new DateTime(2026, 6, 25)
+        };
+
+        var changes = WorkOrderBoardFieldMutations.ApplyScheduledDate(workOrder, parsed: null);
+
+        Assert.Equal(LifecycleStatus.Pending, workOrder.LifecycleStatus);
+        Assert.Contains(changes, c => c.Action == AuditActionType.StatusChanged
+            && c.NewValue == LifecycleStatus.Pending.ToString());
+    }
 }