Solution : https://service.sap.com/sap/support/notes/539873 (SAP Service marketplace login required)
Key words : 
drillupmember return incorrect quantities count returns incorrect figures, delivers incorrect figures, 0a            import support package 12, 0b            import support package 05, invalid mdx statement, cl_rsr_mdx_dulvl cl_rsr_mdx_dumem cl_rsr_mdx_count, rrt1 function group, support packages mentioned, 0a support package 12, bw support packages
Related Notes : 
       
| 493975 | SAPBWNews BW 3.0B Support Package 04 | 
| 458703 | SAPBWNews BW 3.0A Support Package 11 | 
| 458702 | SAPBWNews BW 3.0A Support Package 10 |