How to Import expense report audit data from external system into Orace EBS iExpense

Hi Team,

In Oracle EBS R12 iExpenses, an expense report is created by the employee and sent for manager approval.
Post manager approval, expense report is sent for audit, to an external system, outside Oracle EBS R12.
In the external system, Auditor can short-pay the expense report by rejecting any expense line due to complaince etc.
This externally audited expense report is sent back to Oracle EBS E12.

Now, we want to import this audit data into Oracle EBS R12.

On researching, found that audit data cannot be directly imported into Oracle EBS R12. Can someone confirm if this is correct or we have some workaround solution to import?