The challenges of preserving New York’s landmark interiors doesn’t end with their designation. Changing circumstances that mandate their conversion to different functions may bring about alterations that change the appearance and may compromise the integrity of the site. Hugh Hardy, H3 Hardy Collaboration Architecture; Kitty Hawks, interior designer; and Justin Davidson, architectural critic, will join New York magazine design editor Wendy Goodman in a provocative discussion, introduced by Judith Gura, about the problems faced in preserving landmark interiors in an era of changing needs and a city committed to the pursuit of the new.