Hi,
Yep, you should never moved assets coming from Unity packages or the asset store.
Instead, you should move your own assets into a specific folder, so the root Asset folder isn't where you save all your custom work but instead inside your own folder.
Sometime authors manage to make features that are agnostic to their assets location, but in my case, I failed to find a way to make the Ecosystem that way, sorry
Bye,
Jean