Solution : https://service.sap.com/sap/support/notes/738681 (SAP Service marketplace login required)
Key words : 
affects process chain runs, 10 content            import support package 16, 0b            import support package 22, runs remains unaffected, sap default variant, monitor attribute nodes, 1 content support package 16, import support package 04, import support package 05, monitor attribute node
Related Notes : 
       
| 693495 | SAPBWNews BW Support Package 05 NW'04 Stack 05 RIN | 
| 693494 | SAPBWNews BW SP04 NW'04 Stack 04 RIN | 
| 679667 | SAPBWNews BW 3.1 Content Support Package 16 | 
| 679666 | SAPBWNews BW 3.0B Support Package 22 | 
| 615072 | Correction: CCMS not deleted by process chain deletion |