Solution : https://service.sap.com/sap/support/notes/1103101 (SAP Service marketplace login required)
Key words : 
step procedure manual migration procedure, migration stand point, note includes xrpm4, terms migration, xrpm customers, sp1 reason, 5 specific corrections, applicable, prerequisites
Related Notes : 
       
| 1253309 | Changes to tables ACO_USER and ACO_ROLE after RPM XPRA | 
| 1101176 |