Sorry it’s taken so long to respond. Found an old email of this post…
can prototype control all movie clip?
Yes.
I have an example at home that I’ll post if you want it still. I also wouldn’t have two objects with the same instance name, I think that would cause more harm than good.
And then back on your original question, I usually will put the actions on the movieClip that’s going to be duplicated, that way the code gets copied with each duplication:
onClipEvent(enterFrame){
_x+=3;
//whatever makes your movieClip move
}