diff --git a/osu.Game/Beatmaps/BeatmapConverter.cs b/osu.Game/Beatmaps/BeatmapConverter.cs
index f3434c5153..627e54c803 100644
--- a/osu.Game/Beatmaps/BeatmapConverter.cs
+++ b/osu.Game/Beatmaps/BeatmapConverter.cs
@@ -40,7 +40,13 @@ namespace osu.Game.Beatmaps
         public IBeatmap Convert(CancellationToken cancellationToken = default)
         {
             // We always operate on a clone of the original beatmap, to not modify it game-wide
-            return ConvertBeatmap(Beatmap.Clone(), cancellationToken);
+            var original = Beatmap.Clone();
+
+            // Shallow clone isn't enough to ensure we don't mutate beatmap info unexpectedly.
+            // Can potentially be removed after `Beatmap.Difficulty` doesn't save back to `Beatmap.BeatmapInfo`.
+            original.BeatmapInfo = original.BeatmapInfo.Clone();
+
+            return ConvertBeatmap(original, cancellationToken);
         }
 
         /// <summary>