 In 1636 the warfare prevalent in the region forced the nuns to abandon the abbey, which was destroyed.In 1655 they were eventually granted as a replacement the former leper hospital of Saint Ladre and Saint Lazare in La Neuville, a suburb of Laon, which became known as Montreuil-sous-Laon


The abbey was suppressed in 1792 at the French Revolution.The premises were subsequently used as a workhouse, a lunatic asylum, and as a lodging for refugees, and suffered considerable damage and alteration during this period.