Soft Deletes
When the model uses SoftDeletes, the trait cascades on delete and restore:
class Category extends Model implements HasNestedSet
{
use NodeTrait, SoftDeletes;
}
$category->delete(); // soft-deletes the whole subtree (same deleted_at stamp)
$category->restore(); // restores only descendants stamped with that same
// deleted_at — independent soft-deletes coexist
A descendant that was independently trashed before the parent gets a
different deleted_at and is left alone when the parent restores; restore
it separately to bring it back.