Solution : https://service.sap.com/sap/support/notes/149778 (SAP Service marketplace login required)
Key words : 
additional key words ima2, special measure replacement function, 'edit --> status --> replace, measure replacement function, appropriation request type, additional information, appropriation request, manually replace, automatic replacement, assigned measure
Related Notes : 
       
| 398983 | Information: IM (Investment Management) | 
| 90134 | Field changes in appropriation request and measure | 
| 88776 | Planned values in appropriation request and measure |