Change Job records a staffing change for an existing worker. Begin with the worker ID, the effective date and the approved new job details. A profile edit that leaves no business process history would not supply the same audit trail. Use the process rather than treating the displayed title as an editable label.
The pending request belongs in the Inbox until the required participants approve it. While it's pending, the worker record must retain its prior values. When it completes, compare the requested title and date with the worker's new job and history entry. A confirmation alone isn't enough if you launched the action on the wrong person.