My code to update:
var recipients = envelopesApi.ListRecipients(accountId, envelopeId, new EnvelopesApi.ListRecipientsOptions { includeTabs = true.ToString() });
foreach (var doc in documents)
{
var retornoDelete = envelopesApi.DeleteDocuments(accountId, envelopeId, new EnvelopeDefinition { Documents = new List<Document> { doc } });
}
var resultUpdateDocuments = envelopesApi.UpdateDocuments(accountId, envelopeId, new EnvelopeDefinition { Documents = envelope.Documents, Recipients = recipients });
var resultUpdateRecipients = envelopesApi.UpdateRecipients(accountId, envelopeId, recipients, new EnvelopesApi.UpdateRecipientsOptions { resendEnvelope = "true" });
I have try this link bellow, but not work for me: DocuSign: Signer Tabs are lost when updating an envelope