SAP NetWeaver upgrade from 7.0 to 7.4...

Hello Experts,

We are upgrading NetWeaver Portal from 7.0 to 7.4. Currently we have Composite Applications (WD Java on top of MDM) developed and deployed in Cmposite Environment(CE). Those CE applications are federated with portal and are not part of current migration. We are planning to federate those applications to upgraded version of portal. My question is this:

"How would go for CE federated? Any document for the same would be great. If not, kindly suggest me the way forward to assess the impact of CE federated into NetWeaver portal 7.4?"

Please let me know if you guys need more input.

Note: CE version 7.2

Thanks & Regards,

Manoj