If I use a POP Wrangle to add points to a scene the points appear as expected but then don't take part in my POP Solver simulation (actually driven by a POP Grains).

Is there some action I need to take to make the new points take part in the simulation next frame?

Have solved this one. In case anyone's interested I had to make my new points members of the stream group which in my case was stream_sphere_object1_source.