A record has an "updated" time as today's date in the XML, but there is no update on the record or in the audit history of the record.
Kingston Patch 7
An inactivity monitor fired on the affected record, as it is a P1 and the inactivity monitor pertained to P1s.
This is why the record shows that it was updated, as the record was checked against by the inactivity monitor.
The logs show that "P1 - Severe" inactivity monitor fired against INC001000 every two hours from around 12:49:32.431 AM PST to 10:49:33.686 AM PST.
This is why the record shows as being updated at that time.
This is expected, as the Inactivity Monitor is simply doing what it has been configured to do.