diff --git a/encompass-cs/Collections/ComponentStore.cs b/encompass-cs/Collections/ComponentStore.cs
index 9097c52..0645510 100644
--- a/encompass-cs/Collections/ComponentStore.cs
+++ b/encompass-cs/Collections/ComponentStore.cs
@@ -124,6 +124,14 @@ namespace Encompass
             Lookup<TComponent>().Clear();
         }
 
+        public virtual void ClearAllPriorities()
+        {
+            foreach (var store in Stores.Values)
+            {
+                store.ClearPriorities();
+            }
+        }
+
         public virtual void ClearAll()
         {
             ComponentBitSet.Clear();
diff --git a/encompass-cs/Collections/TypedComponentStore.cs b/encompass-cs/Collections/TypedComponentStore.cs
index 89dfd8f..78a8f20 100644
--- a/encompass-cs/Collections/TypedComponentStore.cs
+++ b/encompass-cs/Collections/TypedComponentStore.cs
@@ -11,6 +11,7 @@ namespace Encompass
         public abstract bool Remove(int entity, int priority);
         public abstract void ForceRemove(int entity);
         public abstract void Clear();
+        public abstract void ClearPriorities();
     }
 
     internal class TypedComponentStore<TComponent> : TypedComponentStore where TComponent : struct, IComponent
@@ -73,6 +74,11 @@ namespace Encompass
             priorities.Clear();
         }
 
+        public override void ClearPriorities()
+        {
+            priorities.Clear();
+        }
+
         public IEnumerable<(TComponent, int)> All()
         {
             foreach (var kvp in store)
diff --git a/encompass-cs/ComponentManager.cs b/encompass-cs/ComponentManager.cs
index 93bd754..ded956e 100644
--- a/encompass-cs/ComponentManager.cs
+++ b/encompass-cs/ComponentManager.cs
@@ -55,6 +55,8 @@ namespace Encompass
         internal void WriteComponents()
         {
             existingComponentStore.UpdateUsing(replayStore);
+            existingComponentStore.ClearAllPriorities();
+            upToDateComponentStore.ClearAllPriorities();
             immediateComponentStore.ClearAll();
             replayStore.ClearAll();
         }
diff --git a/test/ComponentTest.cs b/test/ComponentTest.cs
index 327869e..1b94e51 100644
--- a/test/ComponentTest.cs
+++ b/test/ComponentTest.cs
@@ -98,7 +98,6 @@ namespace Tests
         }
 
         [Reads(typeof(MockComponent))]
-        [WritesImmediate(typeof(MockComponent))]
         [Writes(typeof(MockComponent))]
         class OverwriteEngine : Engine
         {
@@ -106,12 +105,11 @@ namespace Tests
             {
                 foreach (var (mockComponent, entity) in ReadComponentsIncludingEntity<MockComponent>())
                 {
-                    SetComponent(entity, new MockComponent { myInt = 420 });
+                    SetComponent(entity, new MockComponent { myInt = mockComponent.myInt + 1 });
                 }
             }
         }
 
-        [ReadsImmediate(typeof(MockComponent))]
         [Reads(typeof(MockComponent))]
         class ReadMockComponentEngine : Engine
         {
@@ -129,12 +127,20 @@ namespace Tests
             worldBuilder.AddEngine(new ReadMockComponentEngine());
 
             var entity = worldBuilder.CreateEntity();
-            worldBuilder.SetComponent(entity, new MockComponent { });
+            worldBuilder.SetComponent(entity, new MockComponent { myInt = 420 });
 
             var world = worldBuilder.Build();
             world.Update(0.01);
 
             Assert.That(gottenMockComponent.myInt, Is.EqualTo(420));
+
+            world.Update(0.01);
+
+            Assert.That(gottenMockComponent.myInt, Is.EqualTo(421));
+
+            world.Update(0.01);
+
+            Assert.That(gottenMockComponent.myInt, Is.EqualTo(422));
         }
 
         [Reads(typeof(MockComponent))]