Assets > Node Unpublishing

Unpublish Root Transform: Resets the node set as the root transform for the container (this returns container centric selection to the default behavior). For more information, see Container centric selection
Unpublish Parent Anchor: Resets the node currently published as the parent of the container to not retain its plug information. For more information, see Publish a parent or child anchor
Unpublish Child Anchor: Resets the node currently published as the child of the container to not retain its plug information. For more information, see Publish a parent or child anchor