Audit Reports run purge?

Summary: We cannot purge the information from the Audit Reports.

Content (please ensure you mask any confidential information): We cannot purge the Audit Reports output anytime. These information must be stored in the system for Indian tax authorities auditing.

I can't find any document confirming it's not purging.

Does someone know if this is the system behavior?

Version (include the version you are using, if applicable): 23D

Code Snippet (add any code snippets that support your topic, if applicable):