The older experiments do not age well. To keep them archived would threaten the validity of the experiment. It relies on people not having advance knowledge of how things went, and when that's gone the experiment loses its repeatability. I'll explain the theory, but it won't be able to change your beliefs.
There is no time on the astral. You can try the experiment yourself, do everything the old anons did, and when you meet them, introduce yourself as an /x/phile from the future. You'll be going back not in time, but outside of it. The effect appears the same from their reference frame.
This is why I've been trying to design a better experiment. Most such tests rely solely on the facts not being known to the people doing the experiment, and that absolutely kills repeatability. Every metaphysics experiment conducted by scientists has the same problem. Even if they discover vast interconnectedness relating seemingly directly to consciousness, the experiment poses a single thought in the human overbrain, and once had means no more than that singular thought. It's one idea, one realization, among infinite possible potentials.
Conducting an active demonstration is no easy feat. There's nothing you can see on TV that would LOOK like real magic to you, because you already "know" that everything on a screen is fake.