How do I undo a bid adjustment that AI Optimization made on Google?

In Google's AI Optimization history, each action shows the before and after and has an Undo button:

• % adjustment (age, gender, device, day, audience, or location): restores the previous %.
• Schedule (a day or time removed): restores the previous list of days and times.
• Excluded location: the location is added back to the campaign.
• Excluded device: restores the device's previous adjustment.

It helps to leave a comment explaining why. Comments help train the engine.