Dynamic Actors Can Not Play IPO's?

As the title states:

Can dynamic actors play their ipo’s in Bullet?

Here’s what I do:

Create a cube.
Loc rot.
Ten frames forward.
Loc rot.
Make an actor.
Make it dynamic.
Add keyboard sensor.
Add and controller.
Add IPO actuator.
Set to play from 1 to 20.
P to play.

Cube falls into space (or plane, whatever)
Press keyboard sensor and… nothing.

Turn off dynamic.

P to play.
Cube stays in position.
Press keyboard sensor and… voila! It works.

The position of an object is either controlled by physics (dynamic) or animation (IPO), not both.

Physics / dynamics objects can be influenced by applyImpulse etc.