Why is the present arrangement of Donatello’s high altar at the Church of San Antonio historically inaccurate?

The present arrangement of Donatello’s high altar at the Church of San Antonio in Padua is considered historically and aesthetically inaccurate because the original architectural housing for the altar was destroyed a century after its creation.1

The current configuration, which dates back to 1895, does not reflect the original design intended by the artist. Donatello’s ambitious project, which he undertook in the early 1450s, originally featured a richly decorated architectural framework of marble and limestone that integrated seven life-size bronze statues, 21 bronze reliefs of varying sizes, and a large limestone relief titled Entombment of Christ. Because the original structure was lost, the modern placement of these components fails to preserve the intended unity and composition of the work.1