diff --git a/src/Symfony/Component/Translation/Command/TranslationPushCommand.php b/src/Symfony/Component/Translation/Command/TranslationPushCommand.php
index bf6e8c948b8ed..dcc3e4cf9d9a1 100644
--- a/src/Symfony/Component/Translation/Command/TranslationPushCommand.php
+++ b/src/Symfony/Component/Translation/Command/TranslationPushCommand.php
@@ -137,7 +137,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 
         // Reading local translations must be done after retrieving the domains from the provider
         // in order to manage only translations from configured domains
-        $localTranslations = $this->readLocalTranslations($locales, $domains, $this->transPaths);
+        $localTranslations = $this->readLocalTranslations($locales, $domains, $this->transPaths, true);
 
         if (!$domains) {
             $domains = $this->getDomainsFromTranslatorBag($localTranslations);
diff --git a/src/Symfony/Component/Translation/Command/TranslationTrait.php b/src/Symfony/Component/Translation/Command/TranslationTrait.php
index eafaffd3f10d4..39450f1763618 100644
--- a/src/Symfony/Component/Translation/Command/TranslationTrait.php
+++ b/src/Symfony/Component/Translation/Command/TranslationTrait.php
@@ -20,7 +20,7 @@
  */
 trait TranslationTrait
 {
-    private function readLocalTranslations(array $locales, array $domains, array $transPaths): TranslatorBag
+    private function readLocalTranslations(array $locales, array $domains, array $transPaths, bool $mergeIntlIcu = false): TranslatorBag
     {
         $bag = new TranslatorBag();
 
@@ -32,7 +32,7 @@ private function readLocalTranslations(array $locales, array $domains, array $tr
 
             if ($domains) {
                 foreach ($domains as $domain) {
-                    $bag->addCatalogue($this->filterCatalogue($catalogue, $domain));
+                    $bag->addCatalogue($this->filterCatalogue($catalogue, $domain, $mergeIntlIcu));
                 }
             } else {
                 $bag->addCatalogue($catalogue);
@@ -42,14 +42,14 @@ private function readLocalTranslations(array $locales, array $domains, array $tr
         return $bag;
     }
 
-    private function filterCatalogue(MessageCatalogue $catalogue, string $domain): MessageCatalogue
+    private function filterCatalogue(MessageCatalogue $catalogue, string $domain, bool $mergeIntlIcu): MessageCatalogue
     {
         $filteredCatalogue = new MessageCatalogue($catalogue->getLocale());
 
         // extract intl-icu messages only
         $intlDomain = $domain.MessageCatalogueInterface::INTL_DOMAIN_SUFFIX;
         if ($intlMessages = $catalogue->all($intlDomain)) {
-            $filteredCatalogue->add($intlMessages, $intlDomain);
+            $filteredCatalogue->add($intlMessages, $mergeIntlIcu ? $domain : $intlDomain);
         }
 
         // extract all messages and subtract intl-icu messages
diff --git a/src/Symfony/Component/Translation/Tests/Command/TranslationPushCommandTest.php b/src/Symfony/Component/Translation/Tests/Command/TranslationPushCommandTest.php
index 9fcd0d77b183b..f869dd1911eea 100644
--- a/src/Symfony/Component/Translation/Tests/Command/TranslationPushCommandTest.php
+++ b/src/Symfony/Component/Translation/Tests/Command/TranslationPushCommandTest.php
@@ -89,6 +89,52 @@ public function testPushNewMessages()
         $this->assertStringContainsString('[OK] New local translations has been sent to "null" (for "en, fr" locale(s), and "messages" domain(s)).', trim($tester->getDisplay()));
     }
 
+    public function testPushNewIntlIcuMessages()
+    {
+        $arrayLoader = new ArrayLoader();
+        $xliffLoader = new XliffFileLoader();
+        $locales = ['en', 'fr'];
+        $domains = ['messages'];
+
+        // Simulate existing messages on Provider
+        $providerReadTranslatorBag = new TranslatorBag();
+        $providerReadTranslatorBag->addCatalogue($arrayLoader->load(['note' => 'NOTE'], 'en'));
+        $providerReadTranslatorBag->addCatalogue($arrayLoader->load(['note' => 'NOTE'], 'fr'));
+
+        $provider = $this->createMock(ProviderInterface::class);
+        $provider->expects($this->once())
+            ->method('read')
+            ->with($domains, $locales)
+            ->willReturn($providerReadTranslatorBag);
+
+        // Create local files, with a new message
+        $filenameEn = $this->createFile([
+            'note' => 'NOTE',
+            'new.foo' => 'newFooIntlIcu',
+        ], 'en', 'messages+intl-icu.%locale%.xlf');
+        $filenameFr = $this->createFile([
+            'note' => 'NOTE',
+            'new.foo' => 'nouveauFooIntlIcu',
+        ], 'fr', 'messages+intl-icu.%locale%.xlf');
+        $localTranslatorBag = new TranslatorBag();
+        $localTranslatorBag->addCatalogue($xliffLoader->load($filenameEn, 'en'));
+        $localTranslatorBag->addCatalogue($xliffLoader->load($filenameFr, 'fr'));
+
+        $provider->expects($this->once())
+            ->method('write')
+            ->with($localTranslatorBag->diff($providerReadTranslatorBag));
+
+        $provider->expects($this->once())
+            ->method('__toString')
+            ->willReturn('null://default');
+
+        $tester = $this->createCommandTester($provider, $locales, $domains);
+
+        $tester->execute(['--locales' => ['en', 'fr'], '--domains' => ['messages']]);
+
+        $this->assertStringContainsString('[OK] New local translations has been sent to "null" (for "en, fr" locale(s), and "messages" domain(s)).', trim($tester->getDisplay()));
+    }
+
     public function testPushForceMessages()
     {
         $xliffLoader = new XliffFileLoader();