Apple Motion 4 - Manual (Page 430)

Raising or lowering a keyframe in the Keyframe Editor also raises or lowers the background
curve, because the keyframe is modifying the values generated by the behavior.
Important: The value displayed in the Inspector for the affected parameter reflects the
final combined result of both keyframes and behaviors that are applied to that parameter.
Editing a parameter’s values directly in the Inspector only results in changes made to the
underlying parameter value, whether keyframed or not. This parameter value is then
combined with the behavior’s effect, yielding a final value that may differ from the value
you entered.
Moved keyframe
For more information on how to use keyframes in the Keyframe Editor, see Keyframes
and Curves .
Important: When you combine keyframes with multiple behaviors, the results can appear
to be unpredictable, depending on the combination of behaviors that are applied.
430 Chapter 9 Using Behaviors