We have SAP ESS / MSS 603 packages installed on Portal 7.01 with ECC 6.0 EHP4. And these packages has some good amount of customization's done in standard applications (for example : Leave request standard application has been customized).
We are planning to freshly install the portal to NW 7.5 keeping the same ECC and move the portal contents there.
What would be the best approach to move the ESS / MSS packages to NW 7.5 from 7.01? And how we can move the ESS/MSS customization's?