when update is done on parent object child object is also updated

here is my code..

Hibernate-1

Hibernate-2

            <many-to-one class="AnotherForeignKeyObjectJavaClass"   lazy="false" fetch="select" name="AnotherForeignKeyObject">
        <column name="fk_Another_foreign_key_object_primary_key" />
    </many-to-one>
</class>

when am trying to update actual_object hibernate is also updating AnotherForeignKeyObject.i want to skip updating of AnotherForeignKeyObject.i tried lazy=true but it does not work help me on this thanks in advance.

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