While a token is in or moving between the LoR, set-aside area, and in play locations, it is treated as any other card of its type. If it moves to any other location, it fizzles/disappears/etc. So a rescued LS token counts as a Redeemed Soul, and Falling Away turns a Redeemed Soul token back into a Lost Soul token in the LoB.
3. There are currently no default attributes for a token - any beyond the card type will be specified in the identifier line on the creating card.