Opening Old Projects in Motion 3 Problems

Symptoms
Projects created in Motion 2.1 or earlier that use filters including position parameters applied to a 2D layer may behave differently when opened in Motion 3. The center point of the effect may no longer remain with the underlying footage, but may move in the opposite direction.

Resolution
To restore the original behavior, follow these steps:

Open the project in Motion 3.
Choose Window > Layers.
Select the 2D layer in the Layers window.
Select the Groups tab in the Inspector.
Select the Fixed Resolution check box.
Save the project.

Yup. Doing this reminds me of Dan Lyons's great quote, "If your just going to repeat press releases, why have the press?"