Solution : https://service.sap.com/sap/support/notes/456793 (SAP Service marketplace login required)
Key words :
log shows higher number, additional key words fcabp, funds management archiving delivered, log shows correct number, archiving object fm_fmsu, archiving object fm_fcabp, delete archived data, correct amount, archived data, archive data
Related Notes :
508503 | Payment transfers are not archived by FM_FCABP |
132640 | Archiving for Funds Management (FCABP, FMSU) |