"The earliest Armenian discussion about the Conception of the Virgin is to be found in St. Gregory of Datev’s Book of Questions, where he upholds the view that is traditional in the East. Ac-cording to this, the Holy Virgin was free of the seven cardinal sins and all the forgivable sins, but show as now immune from original sin, with which all humans are born. According to St.Gregory of Datev, the Holy Virgin was cleansed of original sin by the Holy Spirit at the time of Annunciation. Christ, taking body from the Holy Virgin, took the original sin of mankind on himself and took it with him onto the cross: He himself bore our sins in his body on the tree, that we might die to sin and live to righteousness (1 Peter 2:24). The Armenian Church’s view of the Holy Virgin in this matter is best summarized by the 12th Century Catholicos St. Nerses the Graceful, who states: The Virgin Mary, from whom he took flesh, was of the peccable nature of Adam [the nature being] united with the divine nature of God, the peccable became impeccable… The Eastern Orthodox and the Armenian veneration of the Assumption of the Holy Virgindoes not differ from that of the Roman Catholic dogma, which implies that Mary did not die because of her immunity from original sin. The Assumption has been declared a dogma ever since 1950 by Pope Pius XII."
January 1, 1970
https://en.wikiquote.org/wiki/Mary%2C_mother_of_Jesus