Customer Audit

We are inprocess of implementing Supplier and customer Audit in Fusion . We did the same in TEST instance and working as below

1. Enable Audit for Required fileds for Customer/Supplier

2. Query Any Customer > Change Payment method to XXXX

3. Run Audit report

Data not coming for changed Payment method

Now If we Query the same Customer again and Change Payment Method from XXXX to ZZZZ

Run Audit report then data coming in Audit report

Which means system is considering the audit from 2nd Audit which does not meet our business requirement as generally there will not be any frequent changes on these Master data .Kindly Assist how to capture Audit data after enabling Audit to get details of changes made after enabling Audit