I created a report of all my matters. I sorted it by Application Number then by Examiner Name so that Examiner Name is that main sorting criteria. For any given examiner name, the application numbers were in order. I saved it as a new test report. I opened some other report and then opened my test report. The matters were sorted by examiner name, but for any given examiner name, the application numbers were in no predictable order.
If there is an existing way to save a report with a multi-level sort as Kim requests, I would love to know.