Dear
your suggestion are correct as per requirement as of my understanding but how to fill that database gap .
can we do system copy instead of export import once the upgrade is done on main server
means the user which were working on stand by server with that server if we do system copy to upgrade system
in this scenario we have one system of EHP4 and another is of EHP6 can we do system copy like this
Kindly suggest possibly way
Regards