diff --git a/Source/AssetRipper.Processing/AssetGroup.cs b/Source/AssetRipper.Processing/AssetGroup.cs
index e959c369a..73035578a 100644
--- a/Source/AssetRipper.Processing/AssetGroup.cs
+++ b/Source/AssetRipper.Processing/AssetGroup.cs
@@ -1,5 +1,6 @@
 using AssetRipper.Assets;
 using AssetRipper.Assets.Metadata;
+using System.Diagnostics;
 
 namespace AssetRipper.Processing;
 
@@ -16,6 +17,7 @@ public abstract class AssetGroup : UnityObjectBase
 		MainAsset = this;
 		foreach (IUnityObjectBase asset in Assets)
 		{
+			Debug.Assert(asset.MainAsset is null || asset.MainAsset == this, "Asset already has a main asset assigned.");
 			asset.MainAsset = this;
 		}
 	}
diff --git a/Source/AssetRipper.Processing/ScriptableObject/ScriptableObjectGroup.cs b/Source/AssetRipper.Processing/ScriptableObject/ScriptableObjectGroup.cs
index 436278a31..ce21155c8 100644
--- a/Source/AssetRipper.Processing/ScriptableObject/ScriptableObjectGroup.cs
+++ b/Source/AssetRipper.Processing/ScriptableObject/ScriptableObjectGroup.cs
@@ -12,7 +12,7 @@ public sealed class ScriptableObjectGroup : AssetGroup, INamed
 		Root = root;
 	}
 
-	public IMonoBehaviour Root { get; set; }
+	public IMonoBehaviour Root { get; }
 	public List<IMonoBehaviour> Children { get; } = [];
 
 	public override IEnumerable<IMonoBehaviour> Assets => Children.Prepend(Root);
@@ -36,7 +36,7 @@ public sealed class ScriptableObjectGroup : AssetGroup, INamed
 		{
 			this.WalkPrimitiveField(walker, Name);
 			walker.DivideAsset(this);
-			this.WalkPrimitiveField(walker, FileExtension ?? "");
+			this.WalkPrimitiveField(walker, FileExtension ?? "", nameof(FileExtension));
 			walker.DivideAsset(this);
 			this.WalkPPtrField(walker, Root);
 			walker.DivideAsset(this);
diff --git a/Source/AssetRipper.Processing/ScriptableObject/ScriptableObjectProcessor.cs b/Source/AssetRipper.Processing/ScriptableObject/ScriptableObjectProcessor.cs
index 0d3907afc..d9d956da6 100644
--- a/Source/AssetRipper.Processing/ScriptableObject/ScriptableObjectProcessor.cs
+++ b/Source/AssetRipper.Processing/ScriptableObject/ScriptableObjectProcessor.cs
@@ -55,14 +55,24 @@ public class ScriptableObjectProcessor : IAssetProcessor
 					continue;
 				}
 
-				children.Add(child);
-
 				SerializableStructure? childStructure = child.LoadStructure();
 				if (childStructure is null)
 				{
 					continue;
 				}
 
+				if (!childStructure.TryGetField("m_Parent", out SerializableValue parent))
+				{
+					continue;
+				}
+
+				if (root.Collection.TryGetAsset(parent.AsPPtr.FileID, parent.AsPPtr.PathID) != root)
+				{
+					continue;
+				}
+
+				children.Add(child);
+
 				if (childStructure.TryGetField("m_Clips", out SerializableValue clips))
 				{
 					foreach (SerializableStructure clip in clips.AsAssetArray.Cast<SerializableStructure>())
diff --git a/Source/AssetRipper.Tests/ExportTests.cs b/Source/AssetRipper.Tests/ExportTests.cs
index 135501969..bab55ca86 100644
--- a/Source/AssetRipper.Tests/ExportTests.cs
+++ b/Source/AssetRipper.Tests/ExportTests.cs
@@ -6,6 +6,7 @@ using AssetRipper.Import.Structure.Assembly.Managers;
 using AssetRipper.IO.Files;
 using AssetRipper.Primitives;
 using AssetRipper.Processing;
+using AssetRipper.Processing.ScriptableObject;
 using AssetRipper.SourceGenerated.Classes.ClassID_114;
 using AssetRipper.SourceGenerated.Classes.ClassID_115;
 using AssetRipper.SourceGenerated.Classes.ClassID_43;
@@ -41,6 +42,48 @@ internal class ExportTests
 		Assert.That(fileSystem.File.Exists("/output/ExportedProject/Assets/MonoBehaviour/MonoBehaviour.asset"));
 	}
 
+	[Test]
+	public void ScriptableObjectGroupIsExported_1()
+	{
+		ProcessedAssetCollection collection = AssetCreator.CreateCollection(UnityVersion.V_2022);
+
+		IMonoBehaviour behaviour1 = collection.CreateMonoBehaviour();
+		IMonoBehaviour behaviour2 = collection.CreateMonoBehaviour();
+		ScriptableObjectGroup group = collection.CreateAsset(default, (assetInfo) => new ScriptableObjectGroup(assetInfo, behaviour1));
+		group.Children.Add(behaviour2);
+		group.SetMainAsset();
+
+		Assert.DoesNotThrow(() => Export(collection));
+	}
+
+	[Test]
+	public void ScriptableObjectGroupIsExported_2()
+	{
+		ProcessedAssetCollection collection = AssetCreator.CreateCollection(UnityVersion.V_2022);
+
+		IMonoBehaviour behaviour1 = collection.CreateMonoBehaviour();
+		IMonoBehaviour behaviour2 = collection.CreateMonoBehaviour();
+		ScriptableObjectGroup group = collection.CreateAsset(default, (assetInfo) => new ScriptableObjectGroup(assetInfo, behaviour2));
+		group.Children.Add(behaviour1);
+		group.SetMainAsset();
+
+		Assert.DoesNotThrow(() => Export(collection));
+	}
+
+	[Test]
+	public void ScriptableObjectGroupIsExported_3()
+	{
+		ProcessedAssetCollection collection = AssetCreator.CreateCollection(UnityVersion.V_2022);
+
+		IMonoBehaviour behaviour1 = collection.CreateMonoBehaviour();
+		ScriptableObjectGroup group = collection.CreateAsset(default, (assetInfo) => new ScriptableObjectGroup(assetInfo, behaviour1));
+		IMonoBehaviour behaviour2 = collection.CreateMonoBehaviour();
+		group.Children.Add(behaviour2);
+		group.SetMainAsset();
+
+		Assert.DoesNotThrow(() => Export(collection));
+	}
+
 	[Test]
 	public void EmptyMeshIsExported()
 	{