Solution : https://service.sap.com/sap/support/notes/732458 (SAP Service marketplace login required)
Key words : 
-> sap library -> sap netweaver-> information integration -> knowledge management-> content manager guide-> content exchange accessing, application group --> sap netweaver --> sap netweaver --> sapnetweaver 04 --> entry, general informationii   enterprise portaliii  knowledge managementiv   user management=======================================================================, migration======================================================================= iv   user management =======================================================================ep6 sp2 source configurations, system administration -> monitoring -> knowledge management > application log, /saphelp_nw04/helpdata/en/7d/19e142ed13f140e10000000a1550b0/frameset, /saphelp_nw04/helpdata/en/14/030fc5b63f11d5993900508b6b8b11/frameset, <sid>_jc<instance_number>_<hostname>, component --> ep migration --> nw04 sr1 ep 6, ha-setupapplying ep6/sps9/p7
Related Notes : 
       
| 993579 | Authentication window when KM-documents opened by email-link | 
| 981767 | "Check Migration Logs" plugin reports that Migration failed. | 
| 961629 | Support Strategy for EP 6.0 SP2 | 
| 949256 | Migrating KM Tasks from EP6 SP2 to NW04 SPS16. | 
| 943541 | KMC does not start after migrating from EP6 SP2 to NW04 | 
| 926204 | Migration plugin throws ClassNotFoundException while running | 
| 873657 | Database size in KMC context, options to downsize | 
| 870731 | Restore default J2EE port num before applying portal patch | 
| 862744 | Not all rooms visible in search after Migration of KMC | 
| 854791 | EP to NW Migration - Obtaining a registration key | 
| 837509 | Rapid installer - Administrator user not found in database | 
| 836768 | Initial Troubleshooting for Portal SP2 to SR migartion | 
| 834976 | Error SQL Server does not exist or access denied | 
| 830263 | Support Platform plugins for SP2 to SR1 migration | 
| 827768 | Comparison between Migration and Transport | 
| 827718 | Initial content, modified by customer, is not migrated | 
| 826391 | Instance startup hangs after EP6 SP2/EP5 migration to NW'04 | 
| 817292 | |
| 816922 | Migration: "!" cannot be contained in the directory name. | 
| 811741 | Delete the file sapins_dev.log after migration: SP2 to SR1 | 
| 807496 | KMC UWL: Post migration configuration for Java Workflow | 
| 805735 | Web report not supported after migration from SP2 to NW04 | 
| 804876 | KMC EP6.0 SP2 to NW04 migration upgrade initial permissions | 
| 803018 | Central note for NetWeaver04 High Availability capabilities | 
| 795142 | Portal file deployment failed - Troubleshooting | 
| 793289 | EP6.0: PCD Inspector Component Notes | 
| 791649 | |
| 780679 | |
| 778977 | Migration of PCD configuration from EP6.0 SP2 to NW04 | 
| 777176 | Migration EP6 to NW04 Troubleshooting for Portal | 
| 759004 | Theme personalization lost after upgrade to EP6 SP6 | 
| 758370 | Error in ISA iViews of BP CRM4.0 60.2 with EP6 SP4 | 
| 741847 | LogAdmin is not delivered with NW SP Stack 4 | 
| 733962 | Session error when accessing ISA from the portal | 
| 731715 | System Principal Roles in KMC | 
| 640330 | EP6: Adding Properties to systems and system templates | 
| 589012 |