diff --git a/psalm-baseline.xml b/psalm-baseline.xml
index 7a3b729e849..9ef3ea33069 100644
--- a/psalm-baseline.xml
+++ b/psalm-baseline.xml
@@ -1502,7 +1502,9 @@
       <code><![CDATA[__wakeup]]></code>
     </UndefinedInterfaceMethod>
     <UndefinedMethod>
-      <code><![CDATA[self::createLazyGhost($initializer, $skippedProperties)]]></code>
+      <code><![CDATA[self::createLazyGhost(static function (InternalProxy $object) use ($initializer, $identifier): void {
+                $initializer($object, $identifier);
+            }, $skippedProperties);]]></code>
     </UndefinedMethod>
     <UnresolvableInclude>
       <code><![CDATA[require $fileName]]></code>
diff --git a/src/Proxy/ProxyFactory.php b/src/Proxy/ProxyFactory.php
index 5b2d2eca0c9..dc8a72bfcea 100644
--- a/src/Proxy/ProxyFactory.php
+++ b/src/Proxy/ProxyFactory.php
@@ -354,15 +354,14 @@ private function createInitializer(ClassMetadata $classMetadata, EntityPersister
     /**
      * Creates a closure capable of initializing a proxy
      *
-     * @return Closure(InternalProxy, InternalProxy):void
+     * @return Closure(InternalProxy, array):void
      *
      * @throws EntityNotFoundException
      */
     private function createLazyInitializer(ClassMetadata $classMetadata, EntityPersister $entityPersister, IdentifierFlattener $identifierFlattener): Closure
     {
-        return static function (InternalProxy $proxy) use ($entityPersister, $classMetadata, $identifierFlattener): void {
-            $identifier = $classMetadata->getIdentifierValues($proxy);
-            $original   = $entityPersister->loadById($identifier);
+        return static function (InternalProxy $proxy, array $identifier) use ($entityPersister, $classMetadata, $identifierFlattener): void {
+            $original = $entityPersister->loadById($identifier);
 
             if ($original === null) {
                 throw EntityNotFoundException::fromClassNameAndIdentifier(
@@ -378,7 +377,7 @@ private function createLazyInitializer(ClassMetadata $classMetadata, EntityPersi
             $class = $entityPersister->getClassMetadata();
 
             foreach ($class->getReflectionProperties() as $property) {
-                if (! $class->hasField($property->name) && ! $class->hasAssociation($property->name)) {
+                if (isset($identifier[$property->name]) || ! $class->hasField($property->name) && ! $class->hasAssociation($property->name)) {
                     continue;
                 }
 
@@ -468,7 +467,9 @@ private function getProxyFactory(string $className): Closure
         $identifierFields = array_intersect_key($class->getReflectionProperties(), $identifiers);
 
         $proxyFactory = Closure::bind(static function (array $identifier) use ($initializer, $skippedProperties, $identifierFields, $className): InternalProxy {
-            $proxy = self::createLazyGhost($initializer, $skippedProperties);
+            $proxy = self::createLazyGhost(static function (InternalProxy $object) use ($initializer, $identifier): void {
+                $initializer($object, $identifier);
+            }, $skippedProperties);
 
             foreach ($identifierFields as $idField => $reflector) {
                 if (! isset($identifier[$idField])) {
diff --git a/tests/Tests/ORM/Functional/ProxiesLikeEntitiesTest.php b/tests/Tests/ORM/Functional/ProxiesLikeEntitiesTest.php
index 01f82c8de7d..1cd05c3fc5a 100644
--- a/tests/Tests/ORM/Functional/ProxiesLikeEntitiesTest.php
+++ b/tests/Tests/ORM/Functional/ProxiesLikeEntitiesTest.php
@@ -58,7 +58,7 @@ protected function setUp(): void
     public function testPersistUpdate(): void
     {
         // Considering case (a)
-        $proxy = $this->_em->getProxyFactory()->getProxy(CmsUser::class, ['id' => 123]);
+        $proxy = $this->_em->getProxyFactory()->getProxy(CmsUser::class, ['id' => $this->user->getId()]);
 
         $proxy->id       = null;
         $proxy->username = 'ocra';