diff --git a/Glamourer/Designs/DesignBase.cs b/Glamourer/Designs/DesignBase.cs
index 06e55d7..5c4996a 100644
--- a/Glamourer/Designs/DesignBase.cs
+++ b/Glamourer/Designs/DesignBase.cs
@@ -280,7 +280,7 @@ public class DesignBase
             var item = _designData.BonusItem(slot);
             ret[slot.ToString()] = new JObject()
             {
-                ["BonusId"] = item.Id.Id,
+                ["BonusId"] = item.CustomId.Id,
                 ["Apply"]   = DoApplyBonusItem(slot),
             };
         }
@@ -431,7 +431,7 @@ public class DesignBase
 
     protected static void LoadBonus(ItemManager items, DesignBase design, JToken? json)
     {
-        if (json is not JObject obj)
+        if (json is not JObject)
         {
             design.Application.BonusItem = 0;
             return;
@@ -439,8 +439,7 @@ public class DesignBase
 
         foreach (var slot in BonusExtensions.AllFlags)
         {
-            var itemJson = json[slot.ToString()] as JObject;
-            if (itemJson == null)
+            if (json[slot.ToString()] is not JObject itemJson)
             {
                 design.Application.BonusItem &= ~slot;
                 design.GetDesignDataRef().SetBonusItem(slot, BonusItem.Empty(slot));
@@ -448,7 +447,7 @@ public class DesignBase
             }
 
             design.SetApplyBonusItem(slot, itemJson["Apply"]?.ToObject<bool>() ?? false);
-            var id   = itemJson["BonusId"]?.ToObject<ushort>() ?? 0;
+            var id   = itemJson["BonusId"]?.ToObject<ulong>() ?? 0;
             var item = items.Resolve(slot, id);
             design.GetDesignDataRef().SetBonusItem(slot, item);
         }
diff --git a/Glamourer/Designs/DesignData.cs b/Glamourer/Designs/DesignData.cs
index 0a52861..28944b9 100644
--- a/Glamourer/Designs/DesignData.cs
+++ b/Glamourer/Designs/DesignData.cs
@@ -112,7 +112,7 @@ public unsafe struct DesignData
         => slot switch
         {
             // @formatter:off
-            BonusItemFlag.Glasses => new BonusItem(_nameGlasses, _iconIds[12], _bonusIds[0], _bonusModelIds[0], _bonusVariants[0], BonusItemFlag.Glasses),
+            BonusItemFlag.Glasses => Penumbra.GameData.Structs.BonusItem.FromIds(_bonusIds[0], _iconIds[12], _bonusModelIds[0], _bonusVariants[0], BonusItemFlag.Glasses, _nameGlasses),
             _ => Penumbra.GameData.Structs.BonusItem.Empty(slot),
             // @formatter:on
         };
diff --git a/Glamourer/Designs/DesignEditor.cs b/Glamourer/Designs/DesignEditor.cs
index 5328f03..a3e86a5 100644
--- a/Glamourer/Designs/DesignEditor.cs
+++ b/Glamourer/Designs/DesignEditor.cs
@@ -175,7 +175,7 @@ public class DesignEditor(
     public void ChangeBonusItem(object data, BonusItemFlag slot, BonusItem item, ApplySettings settings = default)
     {
         var design = (Design)data;
-        if (!Items.IsBonusItemValid(slot, item.Id, out item))
+        if (item.Slot != slot)
             return;
 
         var oldItem = design.DesignData.BonusItem(slot);
diff --git a/Glamourer/Gui/Materials/MaterialDrawer.cs b/Glamourer/Gui/Materials/MaterialDrawer.cs
index dec1aae..1b5e65a 100644
--- a/Glamourer/Gui/Materials/MaterialDrawer.cs
+++ b/Glamourer/Gui/Materials/MaterialDrawer.cs
@@ -139,6 +139,8 @@ public class MaterialDrawer(DesignManager _designManager, Configuration _config)
             "If this is checked, Glamourer will try to revert the advanced dye row to its game state instead of applying a specific row."u8);
     }
 
+    public sealed class MaterialSlotCombo; 
+
     public void DrawNew(Design design)
     {
         if (EquipSlotCombo.Draw("##slot", "Choose a slot for an advanced dye row.", ref _newSlot))
diff --git a/Glamourer/Services/ItemManager.cs b/Glamourer/Services/ItemManager.cs
index 7b83199..8cfd387 100644
--- a/Glamourer/Services/ItemManager.cs
+++ b/Glamourer/Services/ItemManager.cs
@@ -132,16 +132,48 @@ public class ItemManager
         if (index == uint.MaxValue)
             return new BonusItem($"Invalid ({id.Id}-{variant})", 0, 0, id, variant, slot);
 
-        if (id.Id == 0)
-            return BonusItem.Empty(slot);
+        var item = ObjectIdentification.Identify(id, variant, slot)
+            .FirstOrDefault(BonusItem.FromIds(BonusItemId.Invalid, 0, id, variant, slot));
+        if (item.Id != BonusItemId.Invalid)
+            return item;
 
-        return ObjectIdentification.Identify(id, variant, slot)
-            .FirstOrDefault(new BonusItem($"Invalid ({id.Id}-{variant})", 0, 0, id, variant, slot));
+        if (slot is BonusItemFlag.Glasses)
+        {
+            var headItem = ObjectIdentification.Identify(id, 0, variant, EquipSlot.Head).FirstOrDefault();
+            if (headItem.Valid)
+                return BonusItem.FromIds(BonusItemId.Invalid, headItem.IconId, id, variant, slot, $"{headItem.Name} ({EquipSlot.Head.ToName()}: {id}-{variant})");
+        }
+
+        return item;
     }
 
     public BonusItem Resolve(BonusItemFlag slot, BonusItemId id)
         => IsBonusItemValid(slot, id, out var item) ? item : new BonusItem($"Invalid ({id.Id})", 0, id, 0, 0, slot);
 
+    public BonusItem Resolve(BonusItemFlag slot, CustomItemId id)
+    {
+        // Only from early designs as migration.
+        if (!id.IsBonusItem)
+        {
+            IsBonusItemValid(slot, (BonusItemId)id.Id, out var item);
+            return item;
+        }
+
+        if (!id.IsCustom)
+        {
+            if (IsBonusItemValid(slot, id.BonusItem, out var item))
+                return item;
+
+            return BonusItem.Empty(slot);
+        }
+
+        var (model, variant, slot2) = id.SplitBonus;
+        if (slot != slot2)
+            return BonusItem.Empty(slot);
+
+        return Identify(slot, model, variant);
+    }
+
     /// <summary> Return the default offhand for a given mainhand, that is for both handed weapons, return the correct offhand part, and for everything else Nothing. </summary>
     public EquipItem GetDefaultOffhand(EquipItem mainhand)
     {
diff --git a/Penumbra.GameData b/Penumbra.GameData
index 3a65ed1..d9d4b28 160000
--- a/Penumbra.GameData
+++ b/Penumbra.GameData
@@ -1 +1 @@
-Subproject commit 3a65ed1c86a2d5fd5794ff5c0559b02fc25d7224
+Subproject commit d9d4b286d54ad4027a1e8a2bbf900ee79aefaa93