diff --git a/lib/Doctrine/ORM/UnitOfWork.php b/lib/Doctrine/ORM/UnitOfWork.php
index fe12e55df..194e45e30 100644
--- a/lib/Doctrine/ORM/UnitOfWork.php
+++ b/lib/Doctrine/ORM/UnitOfWork.php
@@ -3378,7 +3378,7 @@ class UnitOfWork implements PropertyChangedListener
                     } else {
                         if ($other instanceof Proxy && !$other->__isInitialized()) {
                             // do not merge fields marked lazy that have not been fetched.
-                            return;
+                            continue;
                         }
 
                         if ( ! $assoc2['isCascadeMerge']) {
@@ -3406,7 +3406,7 @@ class UnitOfWork implements PropertyChangedListener
                     if ($mergeCol instanceof PersistentCollection && ! $mergeCol->isInitialized()) {
                         // do not merge fields marked lazy that have not been fetched.
                         // keep the lazy persistent collection of the managed copy.
-                        return;
+                        continue;
                     }
 
                     $managedCol = $prop->getValue($managedCopy);
diff --git a/tests/Doctrine/Tests/Models/DDC3699/DDC3699Child.php b/tests/Doctrine/Tests/Models/DDC3699/DDC3699Child.php
new file mode 100644
index 000000000..320f73138
--- /dev/null
+++ b/tests/Doctrine/Tests/Models/DDC3699/DDC3699Child.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace Doctrine\Tests\Models\DDC3699;
+
+/** @Entity @Table(name="ddc3699_child") */
+class DDC3699Child extends DDC3699Parent
+{
+    const CLASSNAME = __CLASS__;
+
+    /** @Id @Column(type="integer") */
+    public $id;
+
+    /** @Column(type="string") */
+    public $childField;
+
+    /** @OneToOne(targetEntity="DDC3699RelationOne", inversedBy="child") */
+    public $oneRelation;
+
+    /** @OneToMany(targetEntity="DDC3699RelationMany", mappedBy="child") */
+    public $relations;
+}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/Models/DDC3699/DDC3699Parent.php b/tests/Doctrine/Tests/Models/DDC3699/DDC3699Parent.php
new file mode 100644
index 000000000..09cfedaef
--- /dev/null
+++ b/tests/Doctrine/Tests/Models/DDC3699/DDC3699Parent.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Doctrine\Tests\Models\DDC3699;
+
+/** @MappedSuperclass */
+abstract class DDC3699Parent
+{
+    const CLASSNAME = __CLASS__;
+
+    /** @Column(type="string") */
+    public $parentField;
+}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/Models/DDC3699/DDC3699RelationMany.php b/tests/Doctrine/Tests/Models/DDC3699/DDC3699RelationMany.php
new file mode 100644
index 000000000..3e0c06a67
--- /dev/null
+++ b/tests/Doctrine/Tests/Models/DDC3699/DDC3699RelationMany.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Doctrine\Tests\Models\DDC3699;
+
+/**
+ * @Entity
+ * @Table(name="ddc3699_relation_many")
+ */
+class DDC3699RelationMany
+{
+    const CLASSNAME = __CLASS__;
+
+    /** @Id @Column(type="integer") */
+    public $id;
+
+    /** @ManyToOne(targetEntity="DDC3699Child", inversedBy="relations") */
+    public $child;
+}
diff --git a/tests/Doctrine/Tests/Models/DDC3699/DDC3699RelationOne.php b/tests/Doctrine/Tests/Models/DDC3699/DDC3699RelationOne.php
new file mode 100644
index 000000000..c63558d35
--- /dev/null
+++ b/tests/Doctrine/Tests/Models/DDC3699/DDC3699RelationOne.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Doctrine\Tests\Models\DDC3699;
+
+/**
+ * @Entity
+ * @Table(name="ddc3699_relation_one")
+ */
+class DDC3699RelationOne
+{
+    const CLASSNAME = __CLASS__;
+
+    /** @Id @Column(type="integer") */
+    public $id;
+
+    /** @OneToOne(targetEntity="DDC3699Child", mappedBy="oneRelation") */
+    public $child;
+}
diff --git a/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC3699Test.php b/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC3699Test.php
new file mode 100644
index 000000000..a2eff6b57
--- /dev/null
+++ b/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC3699Test.php
@@ -0,0 +1,104 @@
+<?php
+
+use Doctrine\DBAL\Schema\SchemaException;
+use Doctrine\Tests\Models\DDC3699\DDC3699Parent;
+use Doctrine\Tests\Models\DDC3699\DDC3699RelationOne;
+use Doctrine\Tests\Models\DDC3699\DDC3699RelationMany;
+use Doctrine\Tests\Models\DDC3699\DDC3699Child;
+
+/**
+ * @group DDC-3699
+ */
+class DDC3597Test extends \Doctrine\Tests\OrmFunctionalTestCase
+{
+    protected function setUp()
+    {
+        $this->useModelSet('ddc3699');
+
+        parent::setUp();
+    }
+
+    /**
+     * @group DDC-3699
+     */
+    public function testMergingParentClassFieldsDoesNotStopMergingScalarFieldsForToOneUninitializedAssociations()
+    {
+        $id = 1;
+
+        $child = new DDC3699Child();
+
+        $child->id          = $id;
+        $child->childField  = 'childValue';
+        $child->parentField = 'parentValue';
+
+        $relation = new DDC3699RelationOne();
+
+        $relation->id       = $id;
+        $relation->child    = $child ;
+        $child->oneRelation = $relation;
+
+        $this->_em->persist($relation);
+        $this->_em->persist($child);
+        $this->_em->flush();
+        $this->_em->clear();
+
+        // fixtures loaded
+        /* @var $unManagedChild DDC3699Child */
+        $unManagedChild = $this->_em->find(DDC3699Child::CLASSNAME, $id);
+
+        $this->_em->detach($unManagedChild);
+
+        // make it managed again
+        $this->_em->find(DDC3699Child::CLASSNAME, $id);
+
+        $unManagedChild->childField  = 'modifiedChildValue';
+        $unManagedChild->parentField = 'modifiedParentValue';
+
+        /* @var $mergedChild DDC3699Child */
+        $mergedChild = $this->_em->merge($unManagedChild);
+
+        $this->assertSame($mergedChild->childField, 'modifiedChildValue');
+        $this->assertSame($mergedChild->parentField, 'modifiedParentValue');
+    }
+
+    /**
+     * @group DDC-3699
+     */
+    public function testMergingParentClassFieldsDoesNotStopMergingScalarFieldsForToManyUninitializedAssociations()
+    {
+        $id = 2;
+
+        $child = new DDC3699Child();
+
+        $child->id          = $id;
+        $child->childField  = 'childValue';
+        $child->parentField = 'parentValue';
+
+        $relation = new DDC3699RelationMany();
+
+        $relation->id       = $id;
+        $relation->child    = $child ;
+        $child->relations[] = $relation;
+
+        $this->_em->persist($relation);
+        $this->_em->persist($child);
+        $this->_em->flush();
+        $this->_em->clear();
+
+        /* @var $unmanagedChild DDC3699Child */
+        $unmanagedChild = $this->_em->find(DDC3699Child::CLASSNAME, $id);
+        $this->_em->detach($unmanagedChild);
+
+        // make it managed again
+        $this->_em->find(DDC3699Child::CLASSNAME, $id);
+
+        $unmanagedChild->childField  = 'modifiedChildValue';
+        $unmanagedChild->parentField = 'modifiedParentValue';
+
+        /* @var $mergedChild DDC3699Child */
+        $mergedChild = $this->_em->merge($unmanagedChild);
+
+        $this->assertSame($mergedChild->childField, 'modifiedChildValue');
+        $this->assertSame($mergedChild->parentField, 'modifiedParentValue');
+    }
+}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/OrmFunctionalTestCase.php b/tests/Doctrine/Tests/OrmFunctionalTestCase.php
index f48d635f2..855fac617 100644
--- a/tests/Doctrine/Tests/OrmFunctionalTestCase.php
+++ b/tests/Doctrine/Tests/OrmFunctionalTestCase.php
@@ -139,6 +139,12 @@ abstract class OrmFunctionalTestCase extends OrmTestCase
             'Doctrine\Tests\Models\DDC117\DDC117Editor',
             'Doctrine\Tests\Models\DDC117\DDC117Link',
         ),
+        'ddc3699' => array(
+            'Doctrine\Tests\Models\DDC3699\DDC3699Parent',
+            'Doctrine\Tests\Models\DDC3699\DDC3699RelationOne',
+            'Doctrine\Tests\Models\DDC3699\DDC3699RelationMany',
+            'Doctrine\Tests\Models\DDC3699\DDC3699Child',
+        ),
         'stockexchange' => array(
             'Doctrine\Tests\Models\StockExchange\Bond',
             'Doctrine\Tests\Models\StockExchange\Stock',