Jeez, they're dead. Who cares what happens after you're dead?
(You can turn me into paint when I’m dead, but I don’t think it takes a huge stretch to understand why nobody makes paint out of mummies anymore.)
So, presumably after they had ascended with the help of the burial provisions, the remainder of the body was irrelevant?
But perhaps this part was not clearly defined in the teachings.
I think they expected to be bodily resurrected at some future date. I think a lot of people today expect to be bodily resurrected at some future date.