LATAM Brazil inaugurated Sao Paulo Guarulhos (GRU) - Cordoba (COR) - Mt. Pleasant (MPN) service on 20Nov19 linking Brazil's largest city and Argentina's second-largest community with the Malvinas / Falklands Islands, subject of the territorial dispute between Argentina and the UK that led to the South Atlantic War of 1982.
The service was scheduled to operate GRU - MPN nonstop 3x/monthly and GRU - COR - MPN 1x/monthly with all flights operated by 767-300's but was presumably suspended in March 2020 when all scheduled flights to/from and within Argentina were suspended due to COVID-19.
Per aviacionline.com, three of the Mt. Pleasant (MPN) flights stopped in Cordoba (COR) southbound but only one northbound (due to some flight cancellations) between 20Nov19 and March 2020 when the route was suspended due to COVID-19.
The new route complements the flights operated by LATAM Chile and predecessor LAN Chile since 1999 using A319's and A320's between Punta Arenas (PUQ) Chile and Mt. Pleasant (MPN) nonstop 3x/monthly and 1x/monthly with a stop in Rio Gallegos (RGL) in Argentina.
Both the new and existing flights serve to connect the islands with the South American mainland and the world beyond, giving islanders more access to supplies and important services, such as medical treatment. 767-300's were chosen for the route on the basis of their cargo capacity, which by itself was expected to make the route profitable.