Solution : https://service.sap.com/sap/support/notes/1076282 (SAP Service marketplace login required)
Key words :
imported cprojects support package 9, update xslt transformations dpr_ui_gantt_xslt, $gantt-links/is_changed = 'x', $modify-links/is_changed = 'x', ddic structure tabd dpr_ts_api_responsibles, ddic table type dpr_tt_api_responsibles, ddic table type dpr_tt_api_aux_dates, xslt transformations dpr_ui_gantt_xslt, basis support package 9, xslt transformation dpr_ui_gantt_xslt
Related Notes :
| 1072317 | Performance improvement: Expand project structure |
| 929969 | cProjects 4.0 - Performance notes |