All system now supports legacy CID format

spec/epp/domain_spec.rb

@@ -1378,6 +1378,34 @@ describe 'EPP Domain', epp: true do
       d.auth_info.should == existing_pw
     end
 
+    it 'updates a domain with legacy CID format' do
+      existing_pw = domain.auth_info
+
+      xml_params = {
+        name: { value: domain.name },
+        chg: [
+          registrant: { value: 'CID:FIXED:CITIZEN_1234' }
+        ]
+      }
+
+      response = epp_plain_request(domain_update_xml(xml_params, {}, {
+        _anonymus: [
+          legalDocument: {
+            value: 'JVBERi0xLjQKJcOkw7zDtsOfCjIgMCBvYmoKPDwvTGVuZ3RoIDMgMCBSL0Zp==',
+            attrs: { type: 'pdf' }
+          }
+        ]
+      }), :xml)
+
+      response[:results][0][:msg].should == 'Command completed successfully'
+      response[:results][0][:result_code].should == '1000'
+
+      d = Domain.last
+
+      d.registrant_code.should == 'FIXED:CITIZEN_1234'
+      d.auth_info.should == existing_pw
+    end
+
     it 'updates domain and adds objects' do
       xml = domain_update_xml({
         name: { value: domain.name },