About a week ago, we reported on a bug with AdWords/Analytics that can have a negative impact on your ads, cost and ranking of those ads.

In short, the conversion data was not being past from Analytics to AdWords and when you run your ads based off of CPA bidding, without CPA data being passed through, it can have a negative impact.

AdWords customers were told to switch off CPA bidding and on to another bidding logic.

That bug has been fixed late last night and the historical data from the previous days is now catching up.

A Google AdWords representative told me, “this has been fixed and past data will be restored in the coming days.”

An updated WebmasterWorld thread has confirmations from advertisers:

Forum discussion at WebmasterWorld.