diff --git a/Recyclable.Collections.Benchmarks/POC/RecyclableLongListHelpers.CopyFollowingItems.Benchmarks.cs b/Recyclable.Collections.Benchmarks/POC/RecyclableLongListHelpers.CopyFollowingItems.Benchmarks.cs
deleted file mode 100644
index 267749f..0000000
--- a/Recyclable.Collections.Benchmarks/POC/RecyclableLongListHelpers.CopyFollowingItems.Benchmarks.cs
+++ /dev/null
@@ -1,36 +0,0 @@
-using BenchmarkDotNet.Attributes;
-
-namespace Recyclable.Collections.Benchmarks.POC
-{
-	public enum RecyclableLongListHelpersCopyFollowingItemsBenchmarkType
-	{
-		Undefined,
-		Old,
-		New,
-	}
-
-	public class RecyclableLongListHelpersCopyFollowingItemsBenchmarks : RecyclableBenchmarkBase<RecyclableLongListHelpersCopyFollowingItemsBenchmarkType>
-	{
-		[Params(RecyclableLongListHelpersCopyFollowingItemsBenchmarkType.Old)]
-		public override RecyclableLongListHelpersCopyFollowingItemsBenchmarkType BaseDataType { get => base.BaseDataType; set => base.BaseDataType = value; }
-
-		[Params(RecyclableLongListHelpersCopyFollowingItemsBenchmarkType.New)]
-		public override RecyclableLongListHelpersCopyFollowingItemsBenchmarkType DataType { get => base.DataType; set => base.DataType = value; }
-
-		protected override Action GetTestMethod(RecyclableLongListHelpersCopyFollowingItemsBenchmarkType benchmarkType) => benchmarkType switch
-        {
-            RecyclableLongListHelpersCopyFollowingItemsBenchmarkType.Old => CopyFollowingItemsOld,
-            RecyclableLongListHelpersCopyFollowingItemsBenchmarkType.New => CopyFollowingItemsNew,
-            _ => throw CreateUnknownBenchmarkTypeException(benchmarkType),
-        };
-
-		protected override void PrepareData<RecyclableLongListHelpersCopyFollowingItemsBenchmarkType>(RecyclableLongListHelpersCopyFollowingItemsBenchmarkType benchmarkType)
-		{
-			base.PrepareData(RecyclableCollectionsBenchmarkSource.Array);
-			base.PrepareData(RecyclableCollectionsBenchmarkSource.RecyclableLongList);
-		}
-
-		public void CopyFollowingItemsOld() => RecyclableLongList<long>.Helpers.CopyFollowingItemsOld(TestObjectsAsRecyclableLongList, 0);
-		public void CopyFollowingItemsNew() => RecyclableLongList<long>.Helpers.CopyFollowingItems(TestObjectsAsRecyclableLongList, 0);
-	}
-}
diff --git a/Recyclable.Collections/RecyclableLongList.Helpers.cs b/Recyclable.Collections/RecyclableLongList.Helpers.cs
index ecd5f25..a6d327f 100644
--- a/Recyclable.Collections/RecyclableLongList.Helpers.cs
+++ b/Recyclable.Collections/RecyclableLongList.Helpers.cs
@@ -8,52 +8,6 @@ namespace Recyclable.Collections
 	{
 		internal static class Helpers
 		{
-			[MethodImpl(MethodImplOptions.NoInlining | MethodImplOptions.AggressiveOptimization)]
-			public static void CopyFollowingItemsOld(RecyclableLongList<T> list, long destinationItemIndex)
-			{
-				T[][] memoryBlocks = list._memoryBlocks;
-				int nextItemIndex = list._nextItemIndex;
-				int blockSize = list._blockSize;
-				int sourceBlockIndex = (int)((destinationItemIndex + 1) >> list._blockSizePow2BitShift);
-				int sourceItemIndex = (int)((destinationItemIndex + 1) & list._blockSizeMinus1);
-
-				int targetBlockIndex = (int)(destinationItemIndex >> list._blockSizePow2BitShift);
-				int targetItemIndex = (int)(destinationItemIndex & list._blockSizeMinus1);
-
-				int lastTakenBlockIndex = list._lastBlockWithData;
-				while (sourceBlockIndex < lastTakenBlockIndex || (sourceBlockIndex == lastTakenBlockIndex && (sourceItemIndex < nextItemIndex || sourceBlockIndex != list._nextItemBlockIndex)))
-				{
-					int toCopy = sourceBlockIndex < lastTakenBlockIndex || nextItemIndex == 0
-						? blockSize - (sourceItemIndex >= targetItemIndex ? sourceItemIndex : targetItemIndex)
-						: Math.Min(nextItemIndex, blockSize - targetItemIndex);
-
-					Array.Copy(memoryBlocks[sourceBlockIndex], sourceItemIndex, memoryBlocks[targetBlockIndex], targetItemIndex, toCopy);
-
-					// We didn't have enough room in the target array block. There are still items in the source array block to copy.
-					if (sourceItemIndex + toCopy < blockSize)
-					{
-						sourceItemIndex += toCopy;
-						targetBlockIndex++;
-						targetItemIndex = 0;
-					}
-					// We copied all the source items in the current array block. But have we filled the target?
-					else
-					{
-						sourceItemIndex = 0;
-						sourceBlockIndex++;
-						if (targetItemIndex + toCopy < blockSize)
-						{
-							targetItemIndex += toCopy;
-						}
-						else
-						{
-							targetBlockIndex++;
-							targetItemIndex = 0;
-						}
-					}
-				}
-			}
-
 			[MethodImpl(MethodImplOptions.NoInlining | MethodImplOptions.AggressiveOptimization)]
 			public static void CopyFollowingItems(RecyclableLongList<T> list, long destinationItemIndex)
 			{