Solution : https://service.sap.com/sap/support/notes/1473567 (SAP Service marketplace login required)
Summary : 
      Due to restrictions on order customizations for data providers and variables in workbooks with multiple data sources, SAP has addressed this gap by introducing a new configuration feature. Users can now specify the sequence of data providers directly within the Workbook Settings under the ‘Data Providers’ tab. To enable this feature, adjust the RS_FRONTEND_INIT configuration by setting ANA_ALLOW_DP_SORT to "X." This functionality aligns with front-end requirements such as importing Front-End Patch 1300 or higher and back-end adjustments, including specific Support Package installations or updates, as laid out in associated SAP Notes.
Key words : 
software component   sap_bw                        business inform, mentioned front-end support package sap netweaver 7, gui 710import front-end patch, gui 720import front-end patch, move selected data provider, prerequisites missing functionality solution, 0 bw front end, bw front end, frontend patch 1300 - gui 7, frontend patch 200- gui 7
Related Notes : 
       
| 1505834 | SAPBWNews NW 7.x BW Add-On Frontend Patch 201 - GUI 7.20 | 
| 1471463 | SAPBWNews NW BW 7.01 ABAP SP08 | 
| 1468668 | SAPBWNews NW7.0 BW ABAP Support Package 25 | 
| 1450990 | SAPBWNews NW BW 7.02 ABAP SP05 | 
| 1435529 | SAPBWNews NW 7.x BW Add-On Frontend Patch 200 - GUI 7.20 | 
| 1416277 | Broadcaster shows different order of variables | 
| 1413030 | SAPBWNews NW 7.x BW Add-On Frontend Patch 1300 - GUI 7.10 | 
| 1392433 | SAPBINews NW7.11 BW ABAP Support Package 05 | 
| 1085218 | NetWeaver 7.x BW Frontend Patch Delivery Schedule |