Is there any table which stores interface error details for PPM Billing Events?

PJB_Billing_Events_INT doesn't store any details. Or is there any way to delay the purge of data in this table post Import job runs?

I am using it in OIC and need to get the status of the Import job in Main integration to do some other validations, but this seems not possible without splitting Load and Import process. But if I split this, then I am not able to get PDF report of

Import Project Billing Events: Generate Report

in main integration. Hence, if these details are stored anywhere, I can create a report myself and send it to users.