Tested in uchicago-test.(Juniper)  I created a request as myself(Malmborg) and then edited the pickup location logged in as a tastrid.

The audit record shows the source of the edit as me not tastrid.

{
    "logRecords": [
        {
            "id": "d910f58a-2f86-4a1c-ae0c-a8432e56f600",
            "userBarcode": "00010001",
            "items": [
                {
                    "itemBarcode": "107471318",
                    "itemId": "983c86ae-a2a1-5349-b1ad-854cbf474d5b",
                    "instanceId": "d1ef0654-d2e7-5cf8-b2c8-4377bb42d69b",
                    "holdingId": "0f2bec79-178a-5527-851c-2976db4b5d96"
                }
            ],
            "object": "Request",
            "action": "Edited",
            "date": "2022-02-10T21:57:41.029+00:00",
            "servicePointId": "51787734-d899-41e6-b6b2-e531a315fd61",
            "source": "Malmborg, Cheryl",
            "description": "Type: Recall.",
            "linkToIds": {
                "userId": "83b854f0-42c3-47ab-b383-1b31015fda33",
                "requestId": "d65ac39b-e446-4112-a53d-d1616572702b"
            }
        },
        {
            "id": "2aa1892a-ba3b-4dad-b84b-500d5e1ae0ab",
            "userBarcode": "00010001",
            "items": [
                {
                    "itemBarcode": "107471318",
                    "itemId": "983c86ae-a2a1-5349-b1ad-854cbf474d5b",
                    "instanceId": "d1ef0654-d2e7-5cf8-b2c8-4377bb42d69b",
                    "holdingId": "0f2bec79-178a-5527-851c-2976db4b5d96"
                }
            ],
            "object": "Request",
            "action": "Created",
            "date": "2022-02-10T21:11:57.213+00:00",
            "servicePointId": "3a7de149-f17d-4602-adfe-0b09bf8e884a",
            "source": "Malmborg, Cheryl",
            "description": "Type: Recall.",
            "linkToIds": {
                "userId": "83b854f0-42c3-47ab-b383-1b31015fda33",
                "requestId": "d65ac39b-e446-4112-a53d-d1616572702b"
            }
        }
    ],
    "totalRecords": 2
}