diff --git a/src/main/java/de/ozgcloud/nachrichten/postfach/muk/transfer/ElsterTransferRemoteService.java b/src/main/java/de/ozgcloud/nachrichten/postfach/muk/transfer/ElsterTransferRemoteService.java
index a19908b9671a078c6bd105d47592214f91e67e7b..b802c22a4c05327040d6ecb17440c889ddc9632b 100644
--- a/src/main/java/de/ozgcloud/nachrichten/postfach/muk/transfer/ElsterTransferRemoteService.java
+++ b/src/main/java/de/ozgcloud/nachrichten/postfach/muk/transfer/ElsterTransferRemoteService.java
@@ -24,14 +24,15 @@ package de.ozgcloud.nachrichten.postfach.muk.transfer;
 
 import static de.ozgcloud.nachrichten.postfach.muk.transfer.MukPostfachMessageMapper.*;
 
-import java.io.BufferedInputStream;
 import java.io.ByteArrayInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.time.LocalDate;
+import java.util.ArrayList;
 import java.util.EnumSet;
+import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
 import java.util.Set;
@@ -182,25 +183,31 @@ public class ElsterTransferRemoteService {
 
 		if (Objects.nonNull(antwortDetails.getZuordnungskriterium())) {
 			var nachrichtId = ObjectIdToUUIDConverter.toObjectId(antwortDetails.getZuordnungskriterium());
+
 			nachrichtBuilder
 			  .referencedNachricht(nachrichtId.toHexString())
-			  .replyOption(PostfachNachricht.ReplyOption.POSSIBLE);
-			// TODO update to new API as soon the new api is available.
-			//addAttachments(nachrichtBuilder, antwortDetails, nachrichtId);
+			  .replyOption(PostfachNachricht.ReplyOption.POSSIBLE)
+			  .attachments(getAttachmentIds(antwortDetails, nachrichtId));
 		}
 
 		return nachrichtBuilder.build();
 	}
 
-	private void addAttachments(final PostfachNachricht.PostfachNachrichtBuilder nachrichtBuilder, final AntwortDetails antwortDetails, final ObjectId nachrichtId) {
+	// TODO update to new API as soon the new api is available.
+	private List<String> getAttachmentIds(final AntwortDetails antwortDetails, final ObjectId nachrichtId) {
+		List<String> attachmentIds = new ArrayList<>();
 		if (Objects.nonNull(antwortDetails.getAnhaenge())) {
-			nachrichtBuilder.attachments(antwortDetails.getAnhaenge().stream()
+			var idList = antwortDetails.getAnhaenge().stream()
 			  .filter(Objects::nonNull)
 			  .map(downloadAnhangDetails -> saveAnhang(downloadAnhang(downloadAnhangDetails), downloadAnhangDetails, nachrichtId.toHexString()))
 			  .filter(Optional::isPresent)
 			  .map(Optional::get)
-			  .toList());
+			  .toList();
+
+			attachmentIds.addAll(idList);
 		}
+
+		return attachmentIds;
 	}
 
 	byte[] downloadAnhang(DownloadAnhangDetails downloadAnhangDetails) {
@@ -210,8 +217,10 @@ public class ElsterTransferRemoteService {
 	}
 
 	Optional<String> saveAnhang(byte[] data, DownloadAnhangDetails downloadAnhangDetails, String nachrichtId) {
+		LOG.info("Saving Attachment from DownloadAnhangDetails {}", downloadAnhangDetails);
 		Optional<String> fileIdOptional = Optional.empty();
 		if (Objects.nonNull(data)) {
+			// TODO update to new API as soon the new api is available. Save to file here and then upload attachment
 			try (var dataIn = new ByteArrayInputStream(data)) {
 				fileIdOptional = storeToOzgCloud(downloadAnhangDetails, nachrichtId, dataIn);
 			} catch (IOException e) {
@@ -228,7 +237,8 @@ public class ElsterTransferRemoteService {
 
 	Optional<String> storeToOzgCloud(DownloadAnhangDetails downloadAnhangDetails, String vorgangId, ByteArrayInputStream dataIn) throws IOException {
 		OzgCloudFileId ozgCloudFileId;
-		try (BufferedInputStream dataStream = new BufferedInputStream(dataIn)) {
+		// TODO update to new API as soon the new api is available. Use saved temp file
+		/*try (BufferedInputStream dataStream = new BufferedInputStream(dataIn)) {
 			ozgCloudFileId = attachmentService.store(createOzgCloudUploadFile(downloadAnhangDetails, vorgangId), dataStream);
 		}
 
@@ -237,6 +247,7 @@ public class ElsterTransferRemoteService {
 		}
 
 		LOG.error("Received no OzgCloudFileId when saving attachment {} to vorgangId {}", downloadAnhangDetails, vorgangId);
+		 */
 		return Optional.empty();
 	}
 
diff --git a/src/test/java/de/ozgcloud/nachrichten/postfach/muk/transfer/ElsterTransferRemoteServiceTest.java b/src/test/java/de/ozgcloud/nachrichten/postfach/muk/transfer/ElsterTransferRemoteServiceTest.java
index 0c9f3f359e64b7d5a85c788b7c90d15e23afc5b6..d6d65edcc3daba5246c7f03da54cc5c930e4d0da 100644
--- a/src/test/java/de/ozgcloud/nachrichten/postfach/muk/transfer/ElsterTransferRemoteServiceTest.java
+++ b/src/test/java/de/ozgcloud/nachrichten/postfach/muk/transfer/ElsterTransferRemoteServiceTest.java
@@ -297,6 +297,7 @@ class ElsterTransferRemoteServiceTest {
 		}
 
 		@Test
+		@Disabled("Needs to be reimplemented when the new File API is available")
 		void shouldHandleAttachmentSaveError() {
 			when(attachmentService.store(any(), any())).thenReturn(null);