is there a documentation how to upgrade from GWAVA 6.5 at an SLES11SP3
to 'Micro Focus Secure Messaging Gateway' (OMG: Who create this name?)

And NO, this link
is not the solution! It shows 404! (with and without de-de)

Maybe go back to the novell-guys and let them show you how a
documentation system should look. SCNR

BTW: You (Micro Focus) choose Ubuntu as a solution for your
secure-messaging-gateway? ROTFL (Maybe you doesn't know it ... you can
use SUSE.)