Swapping tween targets
The motion tween model in Animate is object based. This means that an object and its motion are independent of each other, and you can easily swap out the target of a motion tween. If, for example, you’d rather see an alien than a rocket ship moving around the Stage, you can replace the target of the motion tween with an alien symbol from your Library panel and still preserve the animation. This is especially useful when you want to work out the motion of a character before the design is final. You can create the animation with placeholder graphics and easily swap them in the end with the final versions.
Drag the movie clip symbol of the alien from the Library panel onto the rocket ship.
Animate asks if you want to replace the existing tween target object with a new object.
Animate replaces the rocket ship with the alien. The motion remains the same, but the target of the motion tween has changed.