It takes 1 day (instead of the 4 days usually needed to Craft) to transfer a rune or swap a pair of runes, and you can continue to work over additional days to get a discount, as usual with Craft.
This is supposed to say "instead of the 2 days," right?
Yes i think it fair to say they just forgot to update that part.
what’s in the Parasynthesis is kinda pointless to the rule itself tho and is just a reminder / clarification that while a craft check, it don’t use the normal craft times.