animation manager stops, when i change the model at runtime.
diagram.animationManager.isEnabled = true has no effect.
Yes, that is intentional – if there is an animation in progress either a transaction or a replacement of the Diagram.model will abort the animation and (probably) start another one.
Replacing the diagram’s model will remove all of the old nodes and links and create new ones corresponding to the new model’s data. It doesn’t make sense to continue animating the movement of nodes that no longer exist.