Disappearing Army? LWW Movie Spoilers

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At the end of the great battle between Peter's army and the Witch's
army, a huge horde of destoned reinforcements arrive from the Witch's
castle and sweep over her army (I liked the giant simply scooping
minotaurs out of his way). Just after Aslan eats the Witch for lunch,
the troops from the castle appear to go blurry and disappear (I didn't
see the huge crowd of destoned people after the battle). Did Aslan
Rapture most of the destonees (except for Tumnus, the Fox, and that lion
Edmund drew his Mark on) up to his Heaven after the battle? If so,
why? Why not simply allow them to complete their interrupted lives in
Narnia?