Briefly, after the economic collapse, depositors sued banks for the return of hard currency deposits in the same currency and won their case. This implied a heavy loss for banks, but they were allowed to write it off gradually. In the case of this bank, they have now written it all off, so their results look better.

"cargos" would have been a better word than "cobros"

From BCRA report: "La amortización de amparos se mantuvo en valores reducidos, evidenciando en el transcurso del año una reducción de 0,4 p.p. del activo hasta 0,3%a. De esta manera, las erogaciones por amparos están próximas a desaparecer del cuadro de resultados del sistema financiero...."