Upgrade Oracle Business Intelligence Publisher Reports to 8.2.3
If you have enabled the Oracle Argus Safety Flexible Aggregate Reporting and you are upgrading from 8.1, 8.1.1, 8.1.2, or 8.1.3:
Note:
You can upgrade Oracle Business Intelligence Publisher reports only from Oracle Argus Safety 8.1. Upgrade from previous versions of Oracle Argus Safety is not supported.
Besides, any customization done to the Aggregate Reports must be taken care after upgrading.