In each of those places (Siddhaloka, Maharloka, Janaloka), the karmic energies from here cannot take hold. Only if a person from those places is lowered, can the karmic energies latch on and produce exchanges.

Yogis who are in those places, know of the earth and of the way the karmic energies work in th earth and the astral zone near earth, but they keep this information supressed so that there is no related karmic memories arising.

It is like when your phone was left in another country. You are aware that it is in that other place but you cannot use it. You know that it must ring from time to time but you cannot answer it unless you return to that other place.