Can we use JPA 2.1 with JBoss EAP 6.4 release ?

Issue

Our client's application is using JPA 2.1 but it is not supported by EAP 6.4 as per KCS article.To make it work we have done below change to $JBOSS_HOME/modules/system/layers/base/javax/persistence/api/main/module.xml to use JPA 2.1 jar.

<module xmlns="urn:jboss:module:1.1" name="javax.persistence.api">
  <dependencies>
     <!-- PersistenceUnitInfo needs javax.sql.DataSource -->
    <module name="javax.api" export="true"/>
 </dependencies>
<resources>
     <!-- <resource-root path="hibernate-jpa-2.0-api-1.0.1.Final-redhat-3.jar"/>-->
     <resource-root path="hibernate-jpa-2.1-api-1.0.0.Final.jar"/>
     <!-- Insert resources here -->
</resources>
</module>

After upgrading jpa2.1, our applicatiosns are working, we are planning to use this in test until eap 7 is released. Is this configuration supported by Red Hat, if incase we face any issue with EAP 6.4.3 due to this change ?