Advanced Matching: Which matching events are stated in the audit trail?

Advanced Matching: Which matching events are stated in the audit trail?

The following matching events are mentioned in the audit trial:  
  1. Added matching (who, when, matched requests, allocated amount)
  2. Removed matching (who, when, unmatched requests, allocated amount)
  3. Auto-unmatching (when, unmatched requests, allocated amount)
  4. Purchase Order marked as "Billed" (who, when, marked Purchase Order)
  5. Purchase Order automatically marked as "Billed" (reason, when)
  6. Purchase Order unmarked as "Billed" (who, when, unmarked Purchase Order)
  7. Purchase Order automatically unmarked as "Billed" (when)