We've had problems bringing an externally managed campaign inhouse, due to the age of our inhouse account - it was totally new. Impressions were extremely low initially but they have now risen, purely down to the account having aged and obtained a good track record over the past 3 months.
However I've created a new campaign within our account and it's just not working at all. Keywords which once delivered around 20 clicks per day in an aged campaign aren't currently delivering anything in the new one.
Has anyone else experienced this? All other settings are exactly the same so it really does seem to be an aging problem.