Thanks
The past few days I took a prosperous keyword out of a campaign to put it in its own, seperate, campaign. However, the keyword which was pulling in over 1000 clicks and 40k impressions daily is currently not producing nearly as much...
ucdawg12, what is happening here is more than likely pretty straightforward - although contacting AdWords support is always a good step to take, as they can look at the account and confirm.
In any case, whenever you create a new ad (which you do, of course, when you create a new campaign or Ad Group), or any time you edit an existing ad - it will only show on Google alone until it can be reviewed and approved.
(BTW, this'll apply even if you create a 'new' ad that is exactly the same in every way as an 'old' ad.)
This can make a big difference in the amount of traffic that you'll receive, as it amounts to the difference between showing in one place (i.e. Google), and showing in potentially dozens (if not hundreds) of places (i.e. Google plus partners).
Once your ads have been reviewed and approved, I suspect that you'll see your traffic return to where you have seen it in the past.
AWA
<added> Evidently, I was writing this at the same time that dave741 was posting his response. ;) </added>