diff --git a/Penumbra/UI/AdvancedWindow/FileEditor.cs b/Penumbra/UI/AdvancedWindow/FileEditor.cs
index eeb94c71..2c6ac170 100644
--- a/Penumbra/UI/AdvancedWindow/FileEditor.cs
+++ b/Penumbra/UI/AdvancedWindow/FileEditor.cs
@@ -207,12 +207,15 @@ public class FileEditor<T>(
         var canSave = _changed && _currentFile is { Valid: true };
         if (ImGuiUtil.DrawDisabledButton("Save to File", Vector2.Zero,
                 $"Save the selected {fileType} file with all changes applied. This is not revertible.", !canSave))
-        {
-            compactor.WriteAllBytes(_currentPath!.File.FullName, _currentFile!.Write());
-            if (owner.Mod != null)
-                communicator.ModFileChanged.Invoke(owner.Mod, _currentPath);
-            _changed = false;
-        }
+            SaveFile();
+    }
+
+    public void SaveFile()
+    {
+        compactor.WriteAllBytes(_currentPath!.File.FullName, _currentFile!.Write());
+        if (owner.Mod != null)
+            communicator.ModFileChanged.Invoke(owner.Mod, _currentPath);
+        _changed = false;
     }
 
     private void ResetButton()
diff --git a/Penumbra/UI/AdvancedWindow/ModEditWindow.Models.MdlTab.cs b/Penumbra/UI/AdvancedWindow/ModEditWindow.Models.MdlTab.cs
index 72ab37b2..b05bcac2 100644
--- a/Penumbra/UI/AdvancedWindow/ModEditWindow.Models.MdlTab.cs
+++ b/Penumbra/UI/AdvancedWindow/ModEditWindow.Models.MdlTab.cs
@@ -1,4 +1,3 @@
-using Lumina.Data.Parsing;
 using OtterGui;
 using Penumbra.GameData;
 using Penumbra.GameData.Files;
diff --git a/Penumbra/UI/AdvancedWindow/ModEditWindow.Models.cs b/Penumbra/UI/AdvancedWindow/ModEditWindow.Models.cs
index bbed64b7..de088736 100644
--- a/Penumbra/UI/AdvancedWindow/ModEditWindow.Models.cs
+++ b/Penumbra/UI/AdvancedWindow/ModEditWindow.Models.cs
@@ -4,6 +4,7 @@ using Lumina.Data.Parsing;
 using OtterGui;
 using OtterGui.Custom;
 using OtterGui.Raii;
+using OtterGui.Text;
 using OtterGui.Widgets;
 using Penumbra.GameData;
 using Penumbra.GameData.Files;
@@ -67,6 +68,7 @@ public partial class ModEditWindow
     {
         var ret = tab.Dirty;
         var data = UpdateFile(tab.Mdl, ret, disabled);
+        DrawVersionUpdate(tab, disabled);
         DrawImportExport(tab, disabled);
 
         ret |= DrawModelMaterialDetails(tab, disabled);
@@ -80,6 +82,19 @@ public partial class ModEditWindow
         return !disabled && ret;
     }
 
+    private void DrawVersionUpdate(MdlTab tab, bool disabled)
+    {
+        if (disabled || tab.Mdl.Version is not MdlFile.V5)
+            return;
+
+        if (!ImUtf8.ButtonEx("Update MDL Version from V5 to V6"u8, "Try using this if the bone weights of a pre-Dawntrail model seem wrong.\n\nThis is not revertible."u8,
+                new Vector2(-0.1f, 0), false, 0, Colors.PressEnterWarningBg))
+            return;
+
+        tab.Mdl.ConvertV5ToV6();
+        _modelTab.SaveFile();
+    }
+
     private void DrawImportExport(MdlTab tab, bool disabled)
     {
         if (!ImGui.CollapsingHeader("Import / Export"))