Migration from PI 7.01 to PI 7.4 Single Stack

Hi experts ,

we have some of the ejb projects of PI 7.01, as we are migrating to the PI 7.4, we have to migrate the existing EJB projects using NWDS 7.31, do we have any best practise for migrating the EJB projects,

Can any one please suggest a step by step by procedure for migrating EJB projects of PI 7.01 through NWDS 7.31 .

Regards

Govardan Raj