diff --git a/lib/Db/FileMapper.php b/lib/Db/FileMapper.php
index e941ece8bb..dd41b3b532 100644
--- a/lib/Db/FileMapper.php
+++ b/lib/Db/FileMapper.php
@@ -281,7 +281,7 @@ public function neutralizeDeletedUser(string $userId, string $displayName): void
 	 */
 	public function getChildrenFiles(int $parentId): array {
 		$cached = array_filter($this->file, fn ($f) => $f->getParentFileId() === $parentId);
-		if (!empty($cached)) {
+		if (!empty($cached) && count($cached) > 1) {
 			return array_values($cached);
 		}
 
diff --git a/lib/Service/IdentifyMethod/IdentifyService.php b/lib/Service/IdentifyMethod/IdentifyService.php
index 1111dee882..ecc0986a1e 100644
--- a/lib/Service/IdentifyMethod/IdentifyService.php
+++ b/lib/Service/IdentifyMethod/IdentifyService.php
@@ -67,16 +67,25 @@ private function propagateIdentifiedDateToEnvelopeChildren(IdentifyMethod $ident
 		$signRequest = $this->signRequestMapper->getById($identifyMethod->getSignRequestId());
 		$fileEntity = $this->fileMapper->getById($signRequest->getFileId());
 
-		if (method_exists($fileEntity, 'getNodeType') && $fileEntity->getNodeType() !== 'envelope') {
+		if ($fileEntity->getNodeType() === 'envelope') {
+			$envelopeId = $fileEntity->getId();
+		} elseif ($fileEntity->hasParent()) {
+			$envelopeId = $fileEntity->getParentFileId();
+		} else {
 			return;
 		}
 
 		$children = $this->signRequestMapper->getByEnvelopeChildrenAndIdentifyMethod(
-			$fileEntity->getId(),
+			$envelopeId,
 			$signRequest->getId(),
 		);
 
 		foreach ($children as $childSignRequest) {
+			// Skip the current sign request to avoid updating it twice
+			if ($childSignRequest->getId() === $signRequest->getId()) {
+				continue;
+			}
+
 			$childMethods = $this->identifyMethodMapper->getIdentifyMethodsFromSignRequestId($childSignRequest->getId());
 
 			foreach ($childMethods as $childEntity) {
diff --git a/lib/Service/SignFileService.php b/lib/Service/SignFileService.php
index d2342d17fc..94b767337e 100644
--- a/lib/Service/SignFileService.php
+++ b/lib/Service/SignFileService.php
@@ -388,21 +388,26 @@ public function sign(): void {
 	 * @return array Array of ['file' => FileEntity, 'signRequest' => SignRequestEntity]
 	 */
 	private function getSignRequestsToSign(): array {
-		if (!$this->libreSignFile->isEnvelope()) {
+		if (!$this->libreSignFile->isEnvelope()
+			&& !$this->libreSignFile->hasParent()
+		) {
 			return [[
 				'file' => $this->libreSignFile,
 				'signRequest' => $this->signRequest,
 			]];
 		}
 
-		$childFiles = $this->fileMapper->getChildrenFiles($this->libreSignFile->getId());
+		$envelopeId = $this->libreSignFile->isEnvelope()
+			? $this->libreSignFile->getId()
+			: $this->libreSignFile->getParentFileId();
 
+		$childFiles = $this->fileMapper->getChildrenFiles($envelopeId);
 		if (empty($childFiles)) {
 			throw new LibresignException('No files found in envelope');
 		}
 
 		$childSignRequests = $this->signRequestMapper->getByEnvelopeChildrenAndIdentifyMethod(
-			$this->libreSignFile->getId(),
+			$envelopeId,
 			$this->signRequest->getId()
 		);
 
diff --git a/tests/php/Unit/Service/IdentifyMethod/IdentifyServiceTest.php b/tests/php/Unit/Service/IdentifyMethod/IdentifyServiceTest.php
new file mode 100644
index 0000000000..b7b8b11f05
--- /dev/null
+++ b/tests/php/Unit/Service/IdentifyMethod/IdentifyServiceTest.php
@@ -0,0 +1,152 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2025 LibreCode coop and contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Libresign\Tests\Unit\Service\IdentifyMethod;
+
+use OCA\Libresign\Db\File;
+use OCA\Libresign\Db\FileMapper;
+use OCA\Libresign\Db\IdentifyMethod;
+use OCA\Libresign\Db\IdentifyMethodMapper;
+use OCA\Libresign\Db\SignRequest;
+use OCA\Libresign\Db\SignRequestMapper;
+use OCA\Libresign\Service\IdentifyMethod\IdentifyService;
+use OCA\Libresign\Service\SessionService;
+use OCA\Libresign\Tests\Unit\TestCase;
+use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\EventDispatcher\IEventDispatcher;
+use OCP\Files\IRootFolder;
+use OCP\IAppConfig;
+use OCP\IL10N;
+use OCP\IURLGenerator;
+use OCP\IUserManager;
+use OCP\Security\IHasher;
+use PHPUnit\Framework\MockObject\MockObject;
+use Psr\Log\LoggerInterface;
+
+final class IdentifyServiceTest extends TestCase {
+	private IdentifyMethodMapper&MockObject $identifyMethodMapper;
+	private SessionService&MockObject $sessionService;
+	private ITimeFactory&MockObject $timeFactory;
+	private IEventDispatcher&MockObject $eventDispatcher;
+	private IRootFolder&MockObject $rootFolder;
+	private IAppConfig&MockObject $appConfig;
+	private SignRequestMapper&MockObject $signRequestMapper;
+	private IL10N&MockObject $l10n;
+	private FileMapper&MockObject $fileMapper;
+	private IHasher&MockObject $hasher;
+	private IUserManager&MockObject $userManager;
+	private IURLGenerator&MockObject $urlGenerator;
+	private LoggerInterface&MockObject $logger;
+	private IdentifyService $service;
+
+	public function setUp(): void {
+		parent::setUp();
+
+		$this->identifyMethodMapper = $this->createMock(IdentifyMethodMapper::class);
+		$this->sessionService = $this->createMock(SessionService::class);
+		$this->timeFactory = $this->createMock(ITimeFactory::class);
+		$this->eventDispatcher = $this->createMock(IEventDispatcher::class);
+		$this->rootFolder = $this->createMock(IRootFolder::class);
+		$this->appConfig = $this->createMock(IAppConfig::class);
+		$this->signRequestMapper = $this->createMock(SignRequestMapper::class);
+		$this->l10n = $this->createMock(IL10N::class);
+		$this->fileMapper = $this->createMock(FileMapper::class);
+		$this->hasher = $this->createMock(IHasher::class);
+		$this->userManager = $this->createMock(IUserManager::class);
+		$this->urlGenerator = $this->createMock(IURLGenerator::class);
+		$this->logger = $this->createMock(LoggerInterface::class);
+
+		$this->service = new IdentifyService(
+			$this->identifyMethodMapper,
+			$this->sessionService,
+			$this->timeFactory,
+			$this->eventDispatcher,
+			$this->rootFolder,
+			$this->appConfig,
+			$this->signRequestMapper,
+			$this->l10n,
+			$this->fileMapper,
+			$this->hasher,
+			$this->userManager,
+			$this->urlGenerator,
+			$this->logger,
+		);
+	}
+
+	public function testPropagateIdentifiedDateSkipsCurrentRequestAndUpdatesSiblings(): void {
+		$identifyMethod = new IdentifyMethod();
+		$identifyMethod->setSignRequestId(1);
+		$identifyMethod->setIdentifierKey('email');
+		$identifyMethod->setIdentifierValue('user@example.com');
+		$identifyMethod->setIdentifiedAtDate('2024-01-01T00:00:00Z');
+
+		$parentEnvelopeId = 99;
+
+		$currentFile = new File();
+		$currentFile->setId(10);
+		$currentFile->setParentFileId($parentEnvelopeId);
+
+		$currentSignRequest = new SignRequest();
+		$currentSignRequest->setId(1);
+		$currentSignRequest->setFileId($currentFile->getId());
+
+		$siblingFile = new File();
+		$siblingFile->setId(11);
+		$siblingFile->setParentFileId($parentEnvelopeId);
+
+		$siblingSignRequest = new SignRequest();
+		$siblingSignRequest->setId(2);
+		$siblingSignRequest->setFileId($siblingFile->getId());
+
+		$this->signRequestMapper
+			->expects($this->once())
+			->method('getById')
+			->with($identifyMethod->getSignRequestId())
+			->willReturn($currentSignRequest);
+
+		$this->fileMapper
+			->expects($this->once())
+			->method('getById')
+			->with($currentFile->getId())
+			->willReturn($currentFile);
+
+		$this->signRequestMapper
+			->expects($this->once())
+			->method('getByEnvelopeChildrenAndIdentifyMethod')
+			->with($parentEnvelopeId, $currentSignRequest->getId())
+			->willReturn([$currentSignRequest, $siblingSignRequest]);
+
+		$siblingIdentifyMethod = new IdentifyMethod();
+		$siblingIdentifyMethod->setSignRequestId($siblingSignRequest->getId());
+		$siblingIdentifyMethod->setIdentifierKey($identifyMethod->getIdentifierKey());
+		$siblingIdentifyMethod->setIdentifierValue($identifyMethod->getIdentifierValue());
+
+		$this->identifyMethodMapper
+			->expects($this->exactly(2))
+			->method('getIdentifyMethodsFromSignRequestId')
+			->willReturnMap([
+				[$identifyMethod->getSignRequestId(), []],
+				[$siblingSignRequest->getId(), [$siblingIdentifyMethod]],
+			]);
+
+		$this->identifyMethodMapper
+			->expects($this->once())
+			->method('insertOrUpdate')
+			->with($identifyMethod);
+
+		$this->identifyMethodMapper
+			->expects($this->once())
+			->method('update')
+			->with($this->callback(function (IdentifyMethod $updated) use ($siblingIdentifyMethod, $identifyMethod) {
+				return $updated->getSignRequestId() === $siblingIdentifyMethod->getSignRequestId()
+					&& $updated->getIdentifiedAtDate() == $identifyMethod->getIdentifiedAtDate();
+			}));
+
+		$this->service->save($identifyMethod);
+	}
+}
diff --git a/tests/php/Unit/Service/SignFileServiceTest.php b/tests/php/Unit/Service/SignFileServiceTest.php
index a914a8f309..3b9b542f24 100644
--- a/tests/php/Unit/Service/SignFileServiceTest.php
+++ b/tests/php/Unit/Service/SignFileServiceTest.php
@@ -625,6 +625,52 @@ public static function providerGetOrGeneratePfxContent(): array {
 		];
 	}
 
+	public function testGetSignRequestsToSignWhenFileHasParentEnvelope(): void {
+		$service = $this->getService();
+
+		$envelopeId = 99;
+		$childFile = new File();
+		$childFile->setId(10);
+		$childFile->setParentFileId($envelopeId);
+
+		$siblingFile = new File();
+		$siblingFile->setId(11);
+		$siblingFile->setParentFileId($envelopeId);
+
+		$signRequest = new SignRequest();
+		$signRequest->setId(200);
+		$signRequest->setFileId($childFile->getId());
+
+		$siblingSignRequest = new SignRequest();
+		$siblingSignRequest->setId(201);
+		$siblingSignRequest->setFileId($siblingFile->getId());
+
+		$this->fileMapper
+			->expects($this->once())
+			->method('getChildrenFiles')
+			->with($envelopeId)
+			->willReturn([$childFile, $siblingFile]);
+
+		$this->signRequestMapper
+			->expects($this->once())
+			->method('getByEnvelopeChildrenAndIdentifyMethod')
+			->with($envelopeId, $signRequest->getId())
+			->willReturn([$signRequest, $siblingSignRequest]);
+
+		$result = self::invokePrivate(
+			$service
+				->setLibreSignFile($childFile)
+				->setSignRequest($signRequest),
+			'getSignRequestsToSign'
+		);
+
+		$this->assertCount(2, $result);
+		$this->assertSame($childFile, $result[0]['file']);
+		$this->assertSame($signRequest, $result[0]['signRequest']);
+		$this->assertSame($siblingFile, $result[1]['file']);
+		$this->assertSame($siblingSignRequest, $result[1]['signRequest']);
+	}
+
 	#[DataProvider('providerStoreUserMetadata')]
 	public function testStoreUserMetadata(bool $collectMetadata, ?array $previous, array $new, ?array $expected): void {
 		$signRequest = new \OCA\Libresign\Db\SignRequest();