Apart from this Ark, which was kept in the Tabernacle, they had another ark, in which were contained the tables broken by Moses, which they carried with them whenever they went to war. The Ark that Bezalel constructed was also used again in Solomon's Temple, for he retained the Ark used by Moses in the Tabernacle, even though all the other furnishings of the Temple were fashioned anew. It remained there up to the time of the destruction of the Temple by Nebuchadnezzar, when it was concealed under the pavement of the wood-house, that it might not fall into the hands of the enemy. This place remained a secret for all time. Once a priest, noticing about the wood-house that something lay hidden under it, called out to his colleagues, but was suddenly stricken dead before divulging the secret.
Two Arks Traveled With Israel Through the Desert
Legends of the Jews 3:12