Does the amendment to a criminal indictment make the indictment void as to all charges?

The defendants contend that the amendment rendered the indictment void as to all of them. No authority has been cited and we can see no reason for such a rule. There has been no suggestion that the others were prejudiced by the change. To upset their conviction on this ground would be a return to mere formalism. Compare Dodge v. United States, supra, holding that an amendment of two counts did not affect the right to try the defendant upon other counts of the indictment.