I tried deleting the emitter of the nParticle cloud, but the second i switch to frame 0, all of them just disappear.
I want to keep (freeze) this cloud in the shape that it is now, remove the object that emits it, and also export the cloud to the Solar System scene. Can I do that?

EDIT: never mind, i misread, you said the Nucleus. Barely found it lol. Thanks.

But it still disappears when I re-load the file...