Remove What You Can't Verify
The return is durable: unlike ads, a corrected record keeps paying after the work stops. In the main, each matching source adds a little confidence; each contradiction subtracts more than it adds.
Clearer brand recognition tends to follow within over a single quarter of a serious clean-up. A profile can look perfect on the surface and still carry a broken website field underneath. Business data providers seldom announce a penalty here; they simply rank a less certain record lower. Give one person the logins and one document the truth; ambiguity is what causes drift, which is worth planning around.