pdivi - 1:03 am on Dec 18, 2009 (gmt 0)

Smallcompany, I have been told the same thing, but it has left me wondering...if that is the case, how does Adwords handle the case of two identical keywords in different Adgroups? Let's say I put 'widgets' in both AdgroupA and AdgroupB. Is their performance history averaged out (as a single keyword under the account) or does the keyword have a distinct identity/history under each Adgroup?

I have been told that to preserve history, you should not delete a keyword under on Adgroup then add it under another, but rather, you should "move" it from one Adgroup to another. I don't really understand the distinction, nor why Google would drop all history on a keyword if there were just a temporary lapse in it.

Can anyone out there shed some light on what it means to "move" a keyword and why it is important?