Lo, none is allowed to take his goods with him,
Lo, none who departs comes back again! (Khurt 172)


This strikes me that the physical goods must stay in the physical world. The second line strikes me as the inevitability of death; No one has physically returned from the grave. If this is correct then most of the AE cosmology stays intact. Your ka and the spiritual furniture is over on the other side. Your embalmbed corpse and left over goodies are on this side of the divide. It's just strictly and acknowledgement of reality and any apparent contradiction vanishes.

However the lines are extremely suggestive that given the choice the AE's would definitely prefer to stay in the world of the living and not spread their "wings and fly to the west".