Solution : https://service.sap.com/sap/support/notes/708577 (SAP Service marketplace login required)
Key words :
1 goto 'portal admin' -> 'channel assignment' 1, terms ep6/nw '04 permission reason, iview 'choose functional location' located, end-user read permission, portal_content/migrated content/ep 5, choose functional location, roles list set, hidden iview lacks, 2 click 'select channel', hidden iview
Related Notes :
732461 | Migration of EP & KM from 5.0 to NW '04 - Central Note |
693969 | Central Note - Installing EP 6.0 on Web AS 6.40 (pre SR1) |
671145 | Central Note for EP 6.0 SP2 Portal |
660410 |