Solution : https://service.sap.com/sap/support/notes/1638566 (SAP Service marketplace login required)
Key words : 
user manually perform record matching     and2, perform record matching operation, record matching procedure, record matching fields, source filethis problem, - mdm sp08 patch01, - change list #98986o, specific flaw addressed, multiple fields     and3, symptom import manager
Related Notes : 
       
| 1635783 | SAP Release Note for MDM 7.1 SP08 Patch01 |