Solution : https://service.sap.com/sap/support/notes/1299456 (SAP Service marketplace login required)
Key words :
software component cprxrpm sap project por, manual post-implementation step manually, imported cprojects support package 6, terms multi-project monitor, update xslt transformations dpr_ui_mpmon_xslt, $modify-links[source_id=$key], $gantt-links[source_id=$key], $gantt-tree/guid = target_id, manual post-implement, relevant support package
Related Notes :
1092846 | cProjects 4.5 - Performance Notes and Sizing Guide |