How do I stop making the same voice edits to AI drafts?
You can stop repeating the same voice edits without waiting for the tool to remember them. The summit notes include a hope that AI tools will learn from the way people write and revise, and whether any particular tool keeps your corrections depends on how it works.
Keep a small set of approved examples. For each one, save the original draft, your revision and a plain explanation of the change. "Make this warmer" is vague, while "Thank the person directly, remove the invented familiarity and keep the request to one paragraph" gives a future draft something to follow.
Keep voice rules and facts apart. Preferring a short opening is a writing choice, and saying you met someone last week is a factual claim that needs its own source. I'd never let a voice guide become permission to invent personal history just because it sounds natural.
Look for repeated edits before you add a permanent rule, since a formal invitation may call for language you wouldn't use in a casual follow-up.
A useful guide describes choices you really make, with examples you're comfortable using. That way you spend less time on the same correction, and your judgment stays in the process.
What to try this week
Pull a few drafts you've revised lately and write the plain explanation of each change in one sentence. Next time you write something similar, paste in the best example and see whether the first pass needs fewer edits. Keep the rules that help and swap out the ones that make the writing stiff or repetitive.