diff --git a/ChartTools/IO/Ini/IniSerializer.cs b/ChartTools/IO/Ini/IniSerializer.cs
index 4a881c0c..5a2097b0 100644
--- a/ChartTools/IO/Ini/IniSerializer.cs
+++ b/ChartTools/IO/Ini/IniSerializer.cs
@@ -17,7 +17,7 @@ public override IEnumerable<string> Serialize()
         foreach ((var key, var value) in props)
             yield return IniFormatting.Line(key, value.ToString());
 
-        foreach (var data in Content.UnidentifiedData)
+        foreach (var data in Content.UnidentifiedData.Where(x => x.Origin is FileType.Ini))
             yield return IniFormatting.Line(data.Key, data.Value);
 
         if (Content.AlbumTrack is not null)