See discussion at https://chat.fhir.org/#narrow/stream/179252-IG-creation/topic/Differential.20table.20bug.20.28or.20.2E.2E.2E.20bug.20in.20my.20brain.29.3F – for example, DiagnosticReport.subject should not be included in the differential list, since it hasn’t changed relative to the base profile. I’m not sure if there’s a systematic issue here with other elements appearing in the differential when they shouldn’t (but if so, other instances would be worth cleaning up, too).