We wrote an article to help you migrate your skills and tweens from old to new in Flash CS4. It accompanys a new Animation Learning Guide on the Developer Center (they go hand in hand, lots of cross links) – and since it is now out, so is the migration article.
Check them out here:
* Motion Migration Guide for Flash CS4
Let us know what you think!
It took awhile to produce this due to its length (over 80 pages in word I think), but the Animation Learning Guide for new motion (introduced in Flash CS4 last fall) is finally out:
http://www.adobe.com/devnet/flash/learning_guide/animation/
It is divided into a bunch of sections based on topic, so click from this page to the topic you want to learn about. Also note that there is a FLA download of samples to help you out.
For more information on whatever, let us know. If you’re upgrading from classic tweens to new tweens, check this other article out too.