issues with hibernate.hbm2ddl.auto = validate in hibernate 5

Question

I am trying to update my project from spring 3 to 4 and hibernate 3 to 5.when i run my application,

<prop key="hibernate.hbm2ddl.auto">validate</prop> 

causes following exception

  Caused by: org.hibernate.tool.schema.spi.SchemaManagementException: Schema-validation: missing column [EditionNewsletterNS_id] in table [Edition_SubscriptionGroup]
at org.hibernate.tool.schema.internal.SchemaValidatorImpl.validateTable(SchemaValidatorImpl.java:85)
at org.hibernate.tool.schema.internal.SchemaValidatorImpl.doValidation(SchemaValidatorImpl.java:50)
at org.hibernate.tool.hbm2ddl.SchemaValidator.validate(SchemaValidator.java:91)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:484)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:444)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:708)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:724)
at org.springframework.orm.hibernate5.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:416)
at org.springframework.orm.hibernate5.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:401)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
... 34 more

Here are my classes

@Entity
public class Edition extends VersionedBaseEntity {
private String name;
private String emailSubject;
private String emailAddress;

//setters and getter

}
@Entity
public class EditionNewsletterNS extends Edition
{
private final Log logger = LogFactory.getLog(getClass());

private List<SubscriptionGroup> subscriptionGroups;\

public void setSubscriptionGroups(List<SubscriptionGroup> 
subscriptionGroups)
{
    this.subscriptionGroups = subscriptionGroups;
}
@ManyToMany(fetch = FetchType.EAGER)
@Fetch(FetchMode.SELECT)
public List<SubscriptionGroup> getSubscriptionGroups()
{
    return subscriptionGroups;
}

}

Edition_SubscriptionGroup has edition_id as column rather than EditionNewsletterNS_id which is actually a dtype.The whole project works well in hibernate 3 and spring 3. Any help is appreciated!