Solution : https://service.sap.com/sap/support/notes/179416 (SAP Service marketplace login required)
Key words : 
additional key words seuzckml2, material ledger tables ckmlcr, inactive material ledger, material ledger, program seuzckml2, euro changeover, table ckmi1, accounting documents, converted correctly, program error
Related Notes : 
       
| 393104 | Optimization of conversion for CKMLCR, CKMLPR, CKMI1 | 
| 162381 | EURO conversion: long runtime for SEUZCKML2 | 
| 121626 | Euro LC changeover:important Support Packages info. |