I assumed that the image you posted was from the section that was under Client Details. Correct me if I am wrong. When I checked under the applicant's Client Details, the "Searched date" was exactly the same date and time as mine, the sponsor. This is why I was saying that this category may indicate the date the VO started processing our app by sending out AOR2 (not sure why it would be listed as "Searched for"). I figured they opened the app on May 4, because that was when we got the line added on eCAS "We started processing your application on ..." and then on May 26, that was the date they sent out AOR2. I think the "We processed your application" line and AOR2 are often sent out around the same date for many VO's except for mine. I might be wrong about this, but this is just the observation I made from my own app.
When did they send your app to the VO? Was it at the end of August?