Compare a revised proof with its earlier version and requested changes.
Catch visual changes beyond the requested proof edit.
See whether the requested proof fix landed and what else changed, right in the review thread before you approve the revision.
Check each revised proof against requested creative changes.
See which requested corrections appear in the latest proof, with findings beside your review notes and uncertain fixes called out.
Keep the latest proof beside earlier fixes for creative review.
Your reviewer can find the new proof beside the earlier version and the fixes still open, right on the task.