Solution : https://service.sap.com/sap/support/notes/1628221 (SAP Service marketplace login required)
Key words : 
import servermaster data serversyndication serverlayout serverimport clientssyndication clientsadministration clientsdata management clientspublication clientsportal content, master data management, prerequisites release note solution, 1portal content, mdm patching process, 0  bp mdm application 7, 1  bp mdm technology 7, 3  bp mdm application 7, 3  bp mdm technology 7, 1 sp07 release 7
Related Notes : 
       
| 1630283 | InvocationTargetException when user saves qualified record | 
| 1629428 | Image/PDF exported from Data Manager with file name missing | 
| 1627692 | Text Large in Tuple can not be changed in Data Manager | 
| 1626854 | "Socket error" when performing MDM operations |