Google AdWords is to remove the "Copy or Move Keywords and Ad Text" and "Advanced Search and Editing" features from the standard AdWords web interface on August 20th.
The logic is that Google wants those type of users to use the new AdWords Editor.
If you try the Copy/Move Keywords and Ad Text tool, you will notice this message at the top:
The 'Copy or Move Keywords and Ad Text' and 'Advanced Search and Editing' tools will be removed from all AdWords accounts on August 20th, 2007. These features are still available in Adwords Editor, which you can download for free. Learn more
Why are they pulling these tools? As explained here:
Since users have told us they find the AdWords Editor platform more flexible and useful, we have decided to migrate all Cross Campaign Tools to the AdWords Editor platform.
Some people at the WebmasterWorld thread are upset about loosing these features from the web editor.
AdWordsAdvisor said he/she will pass this information over to the AdWords people, but "although at this stage of the game, I'm reasonably certain I won't be able to have much influence."
Forum discussion at WebmasterWorld.