Solution : https://service.sap.com/sap/support/notes/871457 (SAP Service marketplace login required)
Key words : 
attached source code corrections, symptom additional date ranges, additional date ranges, terms marketing planner, properly downloaded, unicode system, customizing download, tpm_did reason, special handling, data fromcrm
Related Notes : 
       
| 902083 | Unicode Collection Note for CRM 4.0 | 
| 798263 | Unicode handling in download of Campaign Types |