Change History: The Log Most Owners Never Open

Change history in Google Ads is the account log: who changed a bid, budget, keyword, or status, and when. Open it before you blame the algorithm for a week that went sideways.

Change history is the Google Ads log of who changed bids, budgets, keywords, ads, and conversion settings, and when. If a week looks broken, read the log before you change the bid strategy again. Automation and other users leave fingerprints here.

This is the first place to look when last week's numbers changed. It is not a performance report, and not a substitute for the Search Terms report.

What is Google Ads Change History?

It is a filterable log of edits: budgets, bids, keywords, ads, targeting, conversion actions, and bid strategies, with the user and the time. Google writes the log. You read it. That is the forensic tool.

If you care about approval before a write, this is where you confirm a write actually happened, and who did it.

How do you open and filter Change History?

Open Change history in Google Ads. Filter by date, campaign, and user. The menu moves; the log name does not. Start with last seven days when a week went bad. Then widen if the drop started earlier.

Filter out your own late-night clicks if you already know those. Leave everyone else in, including any tool or manager who has access.

What kinds of changes should you look for first?

• Bid strategy switches (manual to Target CPA, or the other way).
• Daily budget edits and shared-budget attachments.
• Paused keywords, paused ads, or paused campaigns.
• Conversion action added, removed, or flipped from primary to secondary.

A tracking change can move every number without a real sales change. Check that before you touch budget pacing or rebuild the account.

Why is a change missing from Change History?

Some automated bid moves inside Smart Bidding are not listed as a human edit. A change outside the date filter will not show. A user you did not include in the filter will not show. And some UI labels have moved; you may be in a different log view than you think. Widen the date, clear the user filter, then look again.

If you still cannot find it, you do not invent a cause. You keep looking, or you treat the week as unexplained and stop stacking new edits on top.

How do you use Change History after a bad week?

Pick the day performance broke. Read the log for that day and the day before. Name the change. Reverse only that change if you are sure. Then wait. A second guess on top of the first is how accounts get noisier, not healthier. A full audit checklist is a different sitting.

Common questions

What does Change History actually log?

A filterable log of edits in the account: budgets, bids, keywords, ads, targeting, and conversion settings, with the user and the time.

Why did performance change if I did not touch anything?

Someone or some automation did. Check bid strategy switches, budget edits, paused keywords, and conversion action changes.

Can I undo a change from the log?

The log tells you what happened. Putting a setting back is a new edit. Reverse only the change you have identified.

AdvisorPPC is an AI manager. Every applied action is logged. Manual asks before a write. You should be able to see who approved what. The product does not hide edits behind a weekly recap. Budget and bid writes wait at the gate.

Want the account read without another silent edit? Find my wasted spend. No card.