How editting Ad and Keyword affect their ids and ad/keyword performance reports

[Ben Zhang]

Hi I have a question about modifying ad and keyword in the middle of the month. Take keyword for example. If I change a keyword slightly in the middle of the month. If old keyword had 100 clicks, new keyword had 200 clicks for the month, will the monthly keyword performance report list them as two separate rows? Will they have the same keyword id or different keyword ids? Actually keywords performance report has no keywordId field. Is criterionId field the equivalent of keywordId field?

The same question applies to ad performance report as well because you can also modify an ad.

Any idea or comment would be appreciated!!!

[Danial Klimkin]

Hello Ben,

Ads and keywords are immutable. You can't modify it, you can only remove it and create a new one.

If you "modify" ad in the UI, it will remove the old one and create a new one for you behind the scenes. You, then, will be able to see both ads with separate stats.

-Danial, AdWords API Team.