Subsequent changes in DFF in Manage Customers is not recorded in the Audit Report

Summary:

Hi We have a DFF in Manage Customers, which we have added in the Manage Audit Policies for auditing. We have made one initial change and it was recorded in the Audit Report. But after that when did a change again , the change is not getting recorded.

Whereas when we change the name of the customer multiple times and run the Audit report immediately after that the changes are subsequently getting recorded immediately.

But in DFF only for the first time the changes are recorded. The subsequent changes are not recorded.

Why is separate behavior seen for DFFs??

Is there any functionality or any setup is missing?