reset signature on delegate

app/controllers/submit_form_delegate_controller.rb

@@ -32,7 +32,8 @@ class SubmitFormDelegateController < ApplicationController
       SubmissionEvents.create_with_tracking_data(@submitter, 'delegate_form', request,
                                                  { old_email: @submitter.email, email: })
 
-      @submitter.update!(email:, phone: nil, name: nil, slug: SecureRandom.base58(14))
+      @submitter.update!(email:, phone: nil, name: nil, slug: SecureRandom.base58(14),
+                         values: Submitters.fetch_values_without_signature(@submitter))
     end
 
     SendSubmitterInvitationEmailJob.perform_async('submitter_id' => @submitter.id)

lib/submitters.rb

@@ -165,6 +165,21 @@ module Submitters
     preferences
   end
 
+  def fetch_values_without_signature(submitter)
+    fields = submitter.submission.template_fields || submitter.template.fields
+    default_values = submitter.preferences['default_values'] || {}
+
+    field_uuids = fields.filter_map do |field|
+      next if field['submitter_uuid'] != submitter.uuid
+      next unless field['type'].in?(%w[signature initials])
+      next if default_values[field['uuid']].present?
+
+      field['uuid']
+    end
+
+    submitter.values.except(*field_uuids)
+  end
+
   def send_signature_requests(submitters, delay_seconds: nil)
     submitters.each_with_index do |submitter, index|
       next if submitter.email.blank?