Check purchase facts, compare invoices, request missing proof. Every one is ready to run, and you can adjust it in plain language.
Flag unrequested proof changes in the review thread.
See whether the requested proof fix landed and what else changed, right in the review thread before you approve the revision.
Bring the new proof and earlier fixes into one reviewer handoff.
Your reviewer can find the new proof beside the earlier version and the fixes still open, right on the task.