To this I'd like to add that it is very important to delete the keyword, everywhere it appears in your account before attempting to re-enter it. Note that this means you must also delete it within paused or deleted campaigns and Ad Groups. If you don't do this, the keyword will get only a very few impressions before being disabled again. This is because in the eyes of they system the keyword is actually still disabled.
AWA quote from this thread [webmasterworld.com]
There are three ways to delete keywords.
1. Clicking on the box next to the keyword and hitting delete.
2. Going to 'edit keywords' removing them, and saving the keyword list with the words removed.
3. Same as 2, but hitting 'estimate traffic' first, then saving them.
I have no proof of this phenomena, just a hunch. It seems if I use 1 or 2 above, and then readd deleted or slow keywords into their own group, the history is remembered better by G and the new keywords have a higher % of being slowed than if I use method 3.
It's like if you do it manually, the system doesn't really take note the keywords have been removed and readded, and they have more of a chance at a fresh start.
Anyone else have this feeling, or comments about this?
The performance of the re-added keywords depends on their old history and current ad position. The current ad position, which are very dynamic depends on when the keywords were re-added (weekdays, mid-day or late at night, etc.).
I would prefer # 1 since it's easy and no mistakes on wrong deletion will be made.