Originally Posted by
jbcarioca
Good points. If it is possible to have all the flights on the same PNR there are advantages, not least in not having to recheck bags at GRU on your departure, but also to avoid reissuing BP's, and maintaining international luggage rules.
Not carryon BTW. The 5kg limit remains for domestic carryon.
OP would need to recheck bags at GRU in any event, but if on one throug-ticket, could do that at the transit desk and, as noted, be under the international flight baggage weight limits.