From 29bf4adac759b5d3ab95da650f226afe69f690c0 Mon Sep 17 00:00:00 2001
From: "Roman S. Borschel" <roman.borschel@googlemail.com>
Date: Sat, 7 Aug 2010 11:33:33 +0200
Subject: [PATCH] Fixed merging issue with sequence identifiers.

---
 lib/Doctrine/ORM/UnitOfWork.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/Doctrine/ORM/UnitOfWork.php b/lib/Doctrine/ORM/UnitOfWork.php
index 50852ac36..2008cbe53 100644
--- a/lib/Doctrine/ORM/UnitOfWork.php
+++ b/lib/Doctrine/ORM/UnitOfWork.php
@@ -1405,7 +1405,9 @@ class UnitOfWork implements PropertyChangedListener
             // Merge state of $entity into existing (managed) entity
             foreach ($class->reflFields as $name => $prop) {
                 if ( ! isset($class->associationMappings[$name])) {
-                    $prop->setValue($managedCopy, $prop->getValue($entity));
+                    if ( ! $class->isIdentifier($name)) {
+                        $prop->setValue($managedCopy, $prop->getValue($entity));
+                    }
                 } else {
                     $assoc2 = $class->associationMappings[$name];
                     if ($assoc2->isOneToOne()) {