The former-Church of the Misericórdia was then reconstructed with a new orientation, reusing the materials and some of the structures, under the direction of Francisco António Ferreira and Honorato José Correia in 1770. The chapel of the Holy Sacrament was transformed into presbytery, and the south portico was transformed into the principal doorway, resulting in a re-orientation of the nave along a north to south access. The nuns of the Order of Christ, transferred to the new church following its reconstruction, bringing with them the patron saint, "Nossa Senhora da Conceição" and its denomination of "Conceição Velha". At the end of the 18th century, the stone group of the tympanum was encased in glass and illuminated.