If you leave US during the H-1 pending (i.e. change of status from TN to H-1 pending), then the H-1 approval will have no I-94. You had better discuss it with your lawyer before you leave.
If you leave US during the H-1 pending (i.e. change of status from TN to H-1 pending), then the H-1 approval will have no I-94. You had better discuss it with your lawyer before you leave.