diff --git a/phase4-lib/src/main/java/com/helger/phase4/incoming/AS4RequestHandler.java b/phase4-lib/src/main/java/com/helger/phase4/incoming/AS4RequestHandler.java
index c09822af5..f78f558b6 100644
--- a/phase4-lib/src/main/java/com/helger/phase4/incoming/AS4RequestHandler.java
+++ b/phase4-lib/src/main/java/com/helger/phase4/incoming/AS4RequestHandler.java
@@ -109,7 +109,6 @@
 import com.helger.phase4.util.AS4ResourceHelper;
 import com.helger.phase4.util.AS4XMLHelper;
 import com.helger.phase4.util.Phase4Exception;
-import com.helger.phase4.v3.ChangePhase4V3;
 import com.helger.photon.io.PhotonWorkerPool;
 import com.helger.xml.serialize.write.XMLWriter;
 
@@ -272,11 +271,15 @@ public void applyToResponse (@Nonnull final IAS4ResponseAbstraction aHttpRespons
           if (aDumpOS != null)
             try
             {
-              StreamHelper.copyInputStreamToOutputStream (aContent.getBufferedInputStream (), aDumpOS);
+              StreamHelper.copyByteStream ()
+                          .from (aContent.getBufferedInputStream ())
+                          .closeFrom (true)
+                          .to (aDumpOS)
+                          .closeTo (true)
+                          .build ();
             }
             finally
             {
-              StreamHelper.close (aDumpOS);
               aOutgoingDumper.onEndRequest (EAS4MessageMode.RESPONSE,
                                             m_aIncomingMessageMetadata,
                                             m_aIncomingState,
@@ -292,25 +295,6 @@ public void applyToResponse (@Nonnull final IAS4ResponseAbstraction aHttpRespons
     }
   }
 
-  /**
-   * Callback interface to indicate finalization of async processing.
-   *
-   * @author Philip Helger
-   * @since 0.13.1
-   */
-  @ChangePhase4V3 ("Rename")
-  public interface ISoapProcessingFinalizedCallback
-  {
-    /**
-     * Indicate that processing has finished.
-     *
-     * @param bWasSynchronous
-     *        <code>true</code> if it was synchronous, <code>false</code> if it
-     *        was asynchronous.
-     */
-    void onProcessingFinalized (boolean bWasSynchronous);
-  }
-
   private static final class SPIInvocationResult implements ISuccessIndicator
   {
     private boolean m_bSuccess = false;
@@ -376,7 +360,7 @@ public boolean hasAsyncResponseURL ()
   private IAS4IncomingDumper m_aIncomingDumper;
   private IAS4OutgoingDumper m_aOutgoingDumper;
   private IAS4RetryCallback m_aRetryCallback;
-  private ISoapProcessingFinalizedCallback m_aSoapProcessingFinalizedCB;
+  private IAS4SoapProcessingFinalizedCallback m_aSoapProcessingFinalizedCB;
 
   /** By default get all message processors from the global SPI registry */
   private Supplier <? extends ICommonsList <IAS4IncomingMessageProcessorSPI>> m_aProcessorSupplier = AS4IncomingMessageProcessorManager::getAllProcessors;
@@ -722,7 +706,7 @@ public final AS4RequestHandler setRetryCallback (@Nullable final IAS4RetryCallba
    * @since 0.13.1
    */
   @Nullable
-  public final ISoapProcessingFinalizedCallback getSoapProcessingFinalizedCallback ()
+  public final IAS4SoapProcessingFinalizedCallback getSoapProcessingFinalizedCallback ()
   {
     return m_aSoapProcessingFinalizedCB;
   }
@@ -740,7 +724,7 @@ public final ISoapProcessingFinalizedCallback getSoapProcessingFinalizedCallback
    * @since 0.13.1
    */
   @Nonnull
-  public final AS4RequestHandler setSoapProcessingFinalizedCallback (@Nullable final ISoapProcessingFinalizedCallback aSoapProcessingFinalizedCB)
+  public final AS4RequestHandler setSoapProcessingFinalizedCallback (@Nullable final IAS4SoapProcessingFinalizedCallback aSoapProcessingFinalizedCB)
   {
     m_aSoapProcessingFinalizedCB = aSoapProcessingFinalizedCB;
     return this;
diff --git a/phase4-lib/src/main/java/com/helger/phase4/incoming/IAS4SoapProcessingFinalizedCallback.java b/phase4-lib/src/main/java/com/helger/phase4/incoming/IAS4SoapProcessingFinalizedCallback.java
new file mode 100644
index 000000000..4bd67fab2
--- /dev/null
+++ b/phase4-lib/src/main/java/com/helger/phase4/incoming/IAS4SoapProcessingFinalizedCallback.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2015-2024 Philip Helger (www.helger.com)
+ * philip[at]helger[dot]com
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.helger.phase4.incoming;
+
+/**
+ * Callback interface to indicate finalization of async processing.
+ *
+ * @author Philip Helger
+ * @since 0.13.1
+ */
+public interface IAS4SoapProcessingFinalizedCallback
+{
+  /**
+   * Indicate that processing has finished.
+   *
+   * @param bWasSynchronous
+   *        <code>true</code> if it was synchronous, <code>false</code> if it
+   *        was asynchronous.
+   */
+  void onProcessingFinalized (boolean bWasSynchronous);
+}
\ No newline at end of file