not quite true - Argies were 'unhelpful' following the end of the war regarding POW and cas reptriation, they quibbled for some time about the scope of the surrender and cessation of hostilities and whether it applied to forces only under Menedez's command in the FI, and there was considerable evidence that they were looking at the possibility of having another go for some months afterwards.
the fisticuffs mights have ended on 14th June, but the aggro, threats, planning, rhetoric etc.. didn't end until the Junta lost power in December 82.
they may well have lacked the resources to have a go again, but that didn't stop them the first time.