Only changesPublish what has changed
If you later pause or edit something and publish again, only the changes go live. AdBuilder tracks per campaign what has changed or is new since the last time, and updates existing campaigns in place instead of creating everything again.
To know what it has already created, AdBuilder matches on a saved reference to the component in your account, or otherwise on name. If you only change settings such as a budget, AdBuilder skips the underlying components (keywords, ads) and only updates that setting.
PreservationYour campaign history is retained
Because existing campaigns are updated in place, the campaign object is preserved, with its id, budget and accumulated performance. The keyword text and ad content are fixed in Google Ads and cannot be edited; for those, AdBuilder updates the bid and status and replaces the rest where needed.
TroubleshootingLess went live than expected
If, after publishing, you see that a component was not changed in your account, that is usually the incremental behavior: AdBuilder deliberately only publishes what has changed. If you only changed a setting, the underlying keywords and ads are intentionally left untouched.
If something really is not right, check whether you saved the change before you published, and whether you were working in the right campaign. Via the version history you can see what you changed and undo a step.