Solution : https://service.sap.com/sap/support/notes/150657 (SAP Service marketplace login required)
Key words :
symptom function 'show deletion flag', additional key words cj20, 'hide deletion flag', project planning board, structure planning, time scheduling, disappear completely, performance improvement, attached corrections, implement correction
Related Notes :
323146 | Display/hide activities with deletion flag |
122530 | Performance improvements PS system |