I've just checked, I've created a new scene, added a Timeline Plugin to the person, imported previously exported animation, saved everything as the plugin preset, restarted VAM (to be sure - sometimes Timeline plugin cannot get rid of the animation without restarting VAM), created a new scene with a empty person again and loaded a saved plugin preset with Timeline. It loaded the plugin with the proper animation inside it. So it is possible.
As for a native scene animation - I have no idea how to check it.