In what order do the cards needs to be inserted back in to be dealer?
By each hand (duplicate style) or as tricks (rubber bridge style)?
If duplicate which seems likes it makes sense, does order of hands matter as long as each hand is collected in the same order as played – i.e. with first card on bottom?
Yes – first card at the bottom of your played hand
Use duplicate style – and yes the order of how the hands are inserted does not matter