Earlier this month, we reported on a In-Search Video Google AdWords issue where advertisers were claiming in-search ads stopped working after upgrading to enhanced campaigns.
After some time, Google's Zuzana Stierankova Moran (aka Zee), came in with an update. The update basically said it is an upgrade, a feature, and not necessarily a bug.
You may have noticed some changes to in-search performance recently. This is related to a backend change to our ad serving system. We made this change so that in the future, we can bring you additional targeting features for your in-search campaigns (this includes topic, interest and demo targeting, as well as remarketing and frequency capping). We’re also actively working to ensure that performance on the new backend system is similar to that on the old one. As ever, however, we suggest you monitor your account to optimize the performance of your in-search campaigns.
So the reporting is new and thus different, but Google is working on making the numbers as "similar" to the old one as possible.
I just love how reporting can completely change based on who and what runs the report. Makes you question things, doesn't it.
Forum discussion at Google AdWords Help.