diff --git a/src/AcDream.Core.Net/GameEventWiring.cs b/src/AcDream.Core.Net/GameEventWiring.cs
index c9aec8a5..fc425532 100644
--- a/src/AcDream.Core.Net/GameEventWiring.cs
+++ b/src/AcDream.Core.Net/GameEventWiring.cs
@@ -250,19 +250,18 @@ public static class GameEventWiring
                 newSlot: (int)p.Value.Placement);
         });
 
-        // B-Wire: ViewContents (0x0196) — the server's full contents list for a
-        // container you opened. Record membership for each entry so the table is
-        // correct before the container-open UI mounts the second item list.
-        // TODO(container-open): ViewContents is the AUTHORITATIVE full snapshot. When the
-        // container-open phase consumes it, treat it as a full REPLACE (flush the container's
-        // prior membership first), not the additive merge below — otherwise items removed
-        // server-side since the last open would linger.
+        // ViewContents (0x0196) — the server's AUTHORITATIVE full contents list for a container you
+        // opened (Use 0x0036). Treat it as a full REPLACE: flush the container's prior membership and
+        // record the new entries in order (ContainerSlot = index — ACE writes entries
+        // OrderBy(PlacementPosition) with no slot field). The container-open UI (InventoryController)
+        // repaints the grid off the resulting ObjectAdded/Moved events. Retail: ClientUISystem::OnViewContents.
         dispatcher.Register(GameEventType.ViewContents, e =>
         {
             var p = GameEvents.ParseViewContents(e.Payload.Span);
             if (p is null) return;
-            foreach (var entry in p.Value.Items)
-                items.RecordMembership(entry.Guid, containerId: p.Value.ContainerGuid);
+            var guids = new uint[p.Value.Items.Count];
+            for (int i = 0; i < guids.Length; i++) guids[i] = p.Value.Items[i].Guid;
+            items.ReplaceContents(p.Value.ContainerGuid, guids);
         });
 
         // B-Wire: InventoryPutObjectIn3D (0x019A) — server confirms an item dropped
diff --git a/tests/AcDream.Core.Net.Tests/GameEventWiringTests.cs b/tests/AcDream.Core.Net.Tests/GameEventWiringTests.cs
index 96ae5a54..24d868f3 100644
--- a/tests/AcDream.Core.Net.Tests/GameEventWiringTests.cs
+++ b/tests/AcDream.Core.Net.Tests/GameEventWiringTests.cs
@@ -556,6 +556,35 @@ public sealed class GameEventWiringTests
         Assert.Equal(0x500000C9u, items.Get(0x50000A02u)!.ContainerId);
     }
 
+    [Fact]
+    public void WireAll_ViewContents_IsFullReplace_DropsRemovedItems()
+    {
+        var (d, items, _, _, _) = MakeAll();
+
+        // First view of container 0xC9: two items.
+        DispatchViewContents(d, 0x500000C9u, new uint[] { 0x50000A01u, 0x50000A02u });
+        Assert.Equal(2, items.GetContents(0x500000C9u).Count);
+
+        // Second view: only one item — the other was removed server-side. Additive merge would keep both.
+        DispatchViewContents(d, 0x500000C9u, new uint[] { 0x50000A02u });
+        Assert.Equal(new[] { 0x50000A02u }, items.GetContents(0x500000C9u));
+        Assert.Equal(0u, items.Get(0x50000A01u)!.ContainerId);
+    }
+
+    private static void DispatchViewContents(GameEventDispatcher d, uint containerGuid, uint[] itemGuids)
+    {
+        byte[] payload = new byte[8 + itemGuids.Length * 8];
+        BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(0), containerGuid);
+        BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(4), (uint)itemGuids.Length);
+        for (int i = 0; i < itemGuids.Length; i++)
+        {
+            BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(8 + i * 8), itemGuids[i]);
+            BinaryPrimitives.WriteUInt32LittleEndian(payload.AsSpan(12 + i * 8), 0u); // containerType
+        }
+        var env = GameEventEnvelope.TryParse(WrapEnvelope(GameEventType.ViewContents, payload));
+        d.Dispatch(env!.Value);
+    }
+
     [Fact]
     public void WireAll_InventoryPutObjectIn3D_UnparentsFromContainer()
     {