Solution : https://service.sap.com/sap/support/notes/1499233 (SAP Service marketplace login required)
Summary : 
      Column values displacements in SAP NetWeaver BW hierarchies are due to unbalanced hierarchy levels missing entries. The misalignment happens under specific conditions involving bXML flattening. To resolve this issue, import relevant Support Packages (SP) into the BW system: SP08 for NW BW 7.01, SP05 for NW BW 7.02, NW BW 7.11, and SP01 for NW BW 7.30, per their respective detailed SAP Notes. Preliminary versions of corrections might be available before full release. Consult SAP Note 875986 for instruction implementation details.
Key words : 
hierarchy solution sap netweaver bw 7, sap netweaver bw 7, sap nw bw 7, symptom column values, 01 bw abap sp08, 30 bw abap sp01, sapbinews nw bi 7, displayed hierarchy level, import support package 08, import support package 05
Related Notes : 
       
| 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 | 
| 1446246 | MDX: Composite SAP Note for flattening API based on basXML | 
| 1392433 | SAPBINews NW7.11 BW ABAP Support Package 05 | 
| 1156101 | MDX: Composite SAP note for incorrect data |