diff --git a/src/BizHawk.Client.Common/movie/conversions/MovieConversionExtensions.cs b/src/BizHawk.Client.Common/movie/conversions/MovieConversionExtensions.cs
index c4e4797f44..a8bb06c691 100644
--- a/src/BizHawk.Client.Common/movie/conversions/MovieConversionExtensions.cs
+++ b/src/BizHawk.Client.Common/movie/conversions/MovieConversionExtensions.cs
@@ -77,7 +77,7 @@ namespace BizHawk.Client.Common.MovieConversionExtensions
 			return tas;
 		}
 
-		public static IMovie ToBk2(this IMovie old, bool copy = false, bool backup = false)
+		public static IMovie ToBk2(this IMovie old)
 		{
 			var bk2 = new Bk2Movie(old.Filename.Replace(old.PreferredExtension, Bk2Movie.Extension));
 
@@ -87,11 +87,6 @@ namespace BizHawk.Client.Common.MovieConversionExtensions
 				bk2.AppendFrame(input);
 			}
 
-			if (!copy)
-			{
-				old.Truncate(0); // Trying to minimize ram usage
-			}
-
 			bk2.HeaderEntries.Clear();
 			foreach (var kvp in old.HeaderEntries)
 			{
@@ -116,11 +111,6 @@ namespace BizHawk.Client.Common.MovieConversionExtensions
 			bk2.BinarySavestate = old.BinarySavestate;
 			bk2.SaveRam = old.SaveRam;
 
-			if (!backup)
-			{
-				bk2.Save();
-			}
-
 			return bk2;
 		}
 
diff --git a/src/BizHawk.Client.EmuHawk/tools/TAStudio/TAStudio.MenuItems.cs b/src/BizHawk.Client.EmuHawk/tools/TAStudio/TAStudio.MenuItems.cs
index 94a78465fe..a104a9262f 100644
--- a/src/BizHawk.Client.EmuHawk/tools/TAStudio/TAStudio.MenuItems.cs
+++ b/src/BizHawk.Client.EmuHawk/tools/TAStudio/TAStudio.MenuItems.cs
@@ -185,7 +185,7 @@ namespace BizHawk.Client.EmuHawk
 		private void SaveBk2BackupMenuItem_Click(object sender, EventArgs e)
 		{
 			_autosaveTimer.Stop();
-			var bk2 = CurrentTasMovie.ToBk2(copy: true, backup: true);
+			var bk2 = CurrentTasMovie.ToBk2();
 			MessageStatusLabel.Text = "Exporting to .bk2...";
 			Cursor = Cursors.WaitCursor;
 			Update();
@@ -258,7 +258,7 @@ namespace BizHawk.Client.EmuHawk
 				MessageBox.Show("This core requires emulation to be on the last frame when writing the movie, otherwise movie length will appear incorrect.\nTAStudio can't handle this, so Export BK2, play it to the end, and then Save Movie.", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
 			}
 
-			var bk2 = CurrentTasMovie.ToBk2(true, true);
+			var bk2 = CurrentTasMovie.ToBk2();
 			MessageStatusLabel.Text = "Exporting to .bk2...";
 			Cursor = Cursors.WaitCursor;
 			Update();