Solution : https://service.sap.com/sap/support/notes/902083 (SAP Service marketplace login required)
Key words : 
product groups801949 - mobile clients sync performance - unicode servers 805511 - upload, employee/mobile user data exchange793546 - crm server unicode migration, 0 unicode systems805865 - sap office e-mail attachmnt destroyed, unicode crm server 691585 - crm unicode / r3 mdmp connection, double byte characters883958 - catalog export dumps, memo conversion758629 - mobile sales - data exchange note, unicode crm server 783582 - maintaining serverunicode choicelist, multiple code 690577 - unicode enabled message transfer, unicode conversion oss note 548016 mysap web, dataexchange 770245 - newly created business hour
Related Notes : 
       
| 1319517 | Unicode Collection Note | 
| 1084416 | HTTP Publishing does not work for Unicode | 
| 1067999 | XML-Export of product catalogs in xCBL for unicode systems | 
| 938738 | Syslog CP6: still using ambiguous blended code page | 
| 938737 | Syslog CP6: still using blended code page | 
| 891133 | In a Unicode System, R/3 Infoblocks are not seen | 
| 885583 | Factsheet Correction For Unicode Systems | 
| 883958 | Catalog Export dumps in a Unicode system | 
| 880811 | Search Help values are truncating in Transfer to R3 screen | 
| 874976 | Incorr formatting of header text for double byte characters | 
| 873789 | Non XML data to mobile clients from Unicode CRM servers | 
| 871457 | Unicode handling in download of Additional Date Ranges | 
| 871427 | Mail Form Preview not working in PCUI | 
| 862223 | Mail-Form: Add Code Page in file upload screen. | 
| 859699 | Mail-Form:Import file creates extra line. | 
| 857558 | Error converting ext. config from xml to idoc using unicode | 
| 855054 | Customer Factsheet (PDF) error | 
| 853812 | BP transaction: Dump CONNE_IMPORT_CONVERSION_ERROR | 
| 852432 | Unicode changes to CUST_PCPD_WRT D/L object | 
| 852103 | PCUI survey: Printing does not work in Unicode systems | 
| 840944 | Incorrect queue determination for conditions | 
| 840243 | Unicode changes in Mapping module for object CRM_CUST_CNDDIC | 
| 837603 | Mail-forms: Attachment can not be opened at Unicode system | 
| 834750 | Unicode changes to CUSTGRP_WRITE D/L object | 
| 830903 | Error in display of the Fact Sheet, Encoding problems | 
| 827133 | CRM E-Mail: MIME header not parsed correctly | 
| 820258 | SAP product: Dump with delta queue update | 
| 816863 | MSA_CUST_BRICKS: BRICK_TYPE empty | 
| 815732 | HTML-attachment can't be displayed in a Unicode-system | 
| 812978 | CRM e-mail: Incorrect texts in Unicode systems | 
| 805865 | SAP Office E-Mail attachmnt destroyed in Unicode system (II) | 
| 805511 | Upload of condition data from mobile in unicode systems | 
| 801949 | Mobile Clients Sync Performance - Unicode servers | 
| 799328 | Unicode handling in download of Product groups | 
| 798263 | Unicode handling in download of Campaign Types | 
| 797371 | Message PLM_AUDIT046 when you maintain the audit type | 
| 793546 | CRM Server Unicode Migration: Mobile Client Text Tables | 
| 791389 | Survey Tool: Translation with special characters incorrect | 
| 790492 | Unicode : Changes for Employee/Mobile user Data Exchange | 
| 783582 | Maintaining SERVERUNICODE choicelist for a Unicode Server | 
| 783550 | Survey not displayed in Client in case of Unicode CRM Server | 
| 774410 | Unicode-mulitcode issue of Query Name in PCUI | 
| 770245 | Newly created business hour is not displayed in unicode sys | 
| 765048 | Unicode Collection Note for CRM4.0 MW and DataExchange | 
| 762630 | Shut down of MSY when importing Consolidated prefill data | 
| 758629 | Mobile Sales - Data Exchange note for Unicode systems. | 
| 757126 | Middleware Parameter for Memo Conversion | 
| 750640 | Conntrans fails during import phase | 
| 749245 | Unicode: Language and currency fields are not filled | 
| 736690 | Conntrans fails after upgrade to CRM4.0 SP05 | 
| 734635 | Error during Transformation of BDoc Messages in the server | 
| 717467 | Survey Tool: Error during URL generation or testing | 
| 716052 | Middleware HOTFIX for Mobile Clients: CRM 4.0 SP00 - SP07 | 
| 691585 | CRM Unicode / R3 MDMP Connection: User Exits | 
| 691242 | SYSFAIL in inbound queue in Unicode CRM server | 
| 690577 | Unicode Enabled Message Transfer in Mobile Client | 
| 686898 | Data exchange with R/3 back end that uses several code pages | 
| 671075 | Incorrect data in the Unicode system | 
| 666448 | CRM Mobile Client:Collection Note for PDA Companion | 
| 642232 | Solution search for E-service does not work for unicode | 
| 568983 | Preconditions for Unicode enabling of CRM Middleware | 
| 490871 | Composite note: CRM Business Partner Cockpit and Fact Sheet | 
| 455892 | CRM Mobile Client: Workgroup Solution |