diff --git a/assets/js/src/form_editor/blocks/custom_checkbox/custom_checkbox.jsx b/assets/js/src/form_editor/blocks/custom_checkbox/custom_checkbox.jsx
index 9448b7e318..5fdab7b929 100644
--- a/assets/js/src/form_editor/blocks/custom_checkbox/custom_checkbox.jsx
+++ b/assets/js/src/form_editor/blocks/custom_checkbox/custom_checkbox.jsx
@@ -24,7 +24,7 @@ export function getSettings(customField) {
       },
       mandatory: {
         type: 'boolean',
-        default: false,
+        default: customField.params.required ? !!customField.params.required : false,
       },
       customFieldId: {
         type: 'string',
diff --git a/assets/js/src/form_editor/blocks/custom_date/custom_date.jsx b/assets/js/src/form_editor/blocks/custom_date/custom_date.jsx
index d308305a66..2890de6826 100644
--- a/assets/js/src/form_editor/blocks/custom_date/custom_date.jsx
+++ b/assets/js/src/form_editor/blocks/custom_date/custom_date.jsx
@@ -16,7 +16,7 @@ export function getSettings(customField) {
       },
       mandatory: {
         type: 'boolean',
-        default: false,
+        default: customField.params.required ? !!customField.params.required : false,
       },
       defaultToday: {
         type: 'boolean',
diff --git a/assets/js/src/form_editor/blocks/custom_radio/custom_radio.jsx b/assets/js/src/form_editor/blocks/custom_radio/custom_radio.jsx
index 8e6c7f95f2..2c08dcbf37 100644
--- a/assets/js/src/form_editor/blocks/custom_radio/custom_radio.jsx
+++ b/assets/js/src/form_editor/blocks/custom_radio/custom_radio.jsx
@@ -1,5 +1,6 @@
 import Icon from '../custom_text/icon.jsx';
 import Edit from './edit.jsx';
+import { customFieldValuesToBlockValues } from '../../store/form_body_to_blocks.jsx';
 
 export const name = 'mailpoet-form/custom-radio';
 
@@ -20,11 +21,12 @@ export function getSettings(customField) {
       },
       mandatory: {
         type: 'boolean',
-        default: false,
+        default: customField.params.required ? !!customField.params.required : false,
       },
       values: {
         type: 'array',
-        default: [],
+        default: customField.params.values
+          ? customFieldValuesToBlockValues(customField.params.values) : [],
       },
       customFieldId: {
         type: 'string',
diff --git a/assets/js/src/form_editor/blocks/custom_select/custom_select.jsx b/assets/js/src/form_editor/blocks/custom_select/custom_select.jsx
index 7e9a666982..3a4d584507 100644
--- a/assets/js/src/form_editor/blocks/custom_select/custom_select.jsx
+++ b/assets/js/src/form_editor/blocks/custom_select/custom_select.jsx
@@ -1,5 +1,6 @@
 import Icon from '../custom_text/icon.jsx';
 import Edit from './edit.jsx';
+import { customFieldValuesToBlockValues } from '../../store/form_body_to_blocks.jsx';
 
 export const name = 'mailpoet-form/custom-select';
 
@@ -20,11 +21,12 @@ export function getSettings(customField) {
       },
       mandatory: {
         type: 'boolean',
-        default: false,
+        default: customField.params.required ? !!customField.params.required : false,
       },
       values: {
         type: 'array',
-        default: [],
+        default: customField.params.values
+          ? customFieldValuesToBlockValues(customField.params.values) : [],
       },
       customFieldId: {
         type: 'string',
diff --git a/assets/js/src/form_editor/blocks/custom_text/custom_text.jsx b/assets/js/src/form_editor/blocks/custom_text/custom_text.jsx
index a0fd591073..e81f2da386 100644
--- a/assets/js/src/form_editor/blocks/custom_text/custom_text.jsx
+++ b/assets/js/src/form_editor/blocks/custom_text/custom_text.jsx
@@ -20,11 +20,11 @@ export function getSettings(customField) {
       },
       mandatory: {
         type: 'boolean',
-        default: false,
+        default: customField.params.required ? !!customField.params.required : false,
       },
       validate: {
         type: 'string',
-        default: '',
+        default: customField.params.validate ? customField.params.validate : '',
       },
       customFieldId: {
         type: 'string',
diff --git a/assets/js/src/form_editor/blocks/custom_textarea/custom_textarea.jsx b/assets/js/src/form_editor/blocks/custom_textarea/custom_textarea.jsx
index 172db33568..0218185dc9 100644
--- a/assets/js/src/form_editor/blocks/custom_textarea/custom_textarea.jsx
+++ b/assets/js/src/form_editor/blocks/custom_textarea/custom_textarea.jsx
@@ -20,11 +20,11 @@ export function getSettings(customField) {
       },
       mandatory: {
         type: 'boolean',
-        default: false,
+        default: customField.params.required ? !!customField.params.required : false,
       },
       validate: {
         type: 'string',
-        default: '',
+        default: customField.params.validate ? customField.params.validate : '',
       },
       lines: {
         type: 'string',
diff --git a/assets/js/src/form_editor/store/form_body_to_blocks.jsx b/assets/js/src/form_editor/store/form_body_to_blocks.jsx
index 318200f5a2..68f0026a48 100644
--- a/assets/js/src/form_editor/store/form_body_to_blocks.jsx
+++ b/assets/js/src/form_editor/store/form_body_to_blocks.jsx
@@ -1,6 +1,17 @@
 import { has } from 'lodash';
 import formatCustomFieldBlockName from '../blocks/format_custom_field_block_name.jsx';
 
+export const customFieldValuesToBlockValues = (values) => values.map((value) => {
+  const mappedValue = {
+    name: value.value,
+    id: `${Math.random().toString()}-${Date.now()}`,
+  };
+  if (has(value, 'is_checked') && value.is_checked) {
+    mappedValue.isChecked = true;
+  }
+  return mappedValue;
+});
+
 const mapCustomField = (item, customFields, mappedCommonProperties) => {
   const customField = customFields.find((cf) => cf.id === parseInt(item.id, 10));
   if (!customField) return null;
@@ -38,16 +49,7 @@ const mapCustomField = (item, customFields, mappedCommonProperties) => {
       mapped.attributes.defaultToday = !!item.params.is_default_today;
     }
     if (has(item.params, 'values') && Array.isArray(item.params.values)) {
-      mapped.attributes.values = item.params.values.map((value) => {
-        const mappedValue = {
-          name: value.value,
-          id: `${Math.random().toString()}-${Date.now()}`,
-        };
-        if (has(value, 'is_checked') && value.is_checked) {
-          mappedValue.isChecked = true;
-        }
-        return mappedValue;
-      });
+      mapped.attributes.values = customFieldValuesToBlockValues(item.params.values);
     }
   }
   return mapped;
@@ -58,7 +60,7 @@ const mapCustomField = (item, customFields, mappedCommonProperties) => {
  * @param {array} data - from form.body property
  * @param {array} customFields - list of all custom fields
  */
-export default (data, customFields = []) => {
+export const formBodyToBlocks = (data, customFields = []) => {
   if (!Array.isArray(data)) {
     throw new Error('Mapper expects form body to be an array.');
   }
diff --git a/assets/js/src/form_editor/store/store.jsx b/assets/js/src/form_editor/store/store.jsx
index 249d3279ba..20daf4346b 100644
--- a/assets/js/src/form_editor/store/store.jsx
+++ b/assets/js/src/form_editor/store/store.jsx
@@ -8,7 +8,7 @@ import createReducer from './reducer.jsx';
 import selectors from './selectors.jsx';
 import controls from './controls.jsx';
 import validateForm from './form_validator.jsx';
-import formBodyToBlocks from './form_body_to_blocks.jsx';
+import { formBodyToBlocks } from './form_body_to_blocks.jsx';
 
 export default () => {
   const formData = { ...window.mailpoet_form_data };
diff --git a/tests/javascript/form_editor/store/form_body_to_blocks.spec.js b/tests/javascript/form_editor/store/form_body_to_blocks.spec.js
index 3d5b909b37..2e0c3a0971 100644
--- a/tests/javascript/form_editor/store/form_body_to_blocks.spec.js
+++ b/tests/javascript/form_editor/store/form_body_to_blocks.spec.js
@@ -1,5 +1,5 @@
 import { expect } from 'chai';
-import formBodyToBlocks from '../../../../assets/js/src/form_editor/store/form_body_to_blocks.jsx';
+import { formBodyToBlocks } from '../../../../assets/js/src/form_editor/store/form_body_to_blocks.jsx';
 
 const emailInput = {
   type: 'text',