diff --git a/config/sync/core.entity_form_display.node.custom_page.default.yml b/config/sync/core.entity_form_display.node.custom_page.default.yml
index 2c0b545315..5bbb92c947 100644
--- a/config/sync/core.entity_form_display.node.custom_page.default.yml
+++ b/config/sync/core.entity_form_display.node.custom_page.default.yml
@@ -3,7 +3,6 @@ langcode: en
 status: true
 dependencies:
   config:
-    - field.field.node.custom_page.body
     - field.field.node.custom_page.field_attachment
     - field.field.node.custom_page.field_cp_content_listing
     - field.field.node.custom_page.field_custom_page_logo
@@ -83,7 +82,6 @@ content:
     settings: {  }
     third_party_settings: {  }
 hidden:
-  body: true
   created: true
   current_workflow_state: true
   og_audience: true
diff --git a/config/sync/core.entity_view_display.node.custom_page.default.yml b/config/sync/core.entity_view_display.node.custom_page.default.yml
index c9e48baba1..555483ff22 100644
--- a/config/sync/core.entity_view_display.node.custom_page.default.yml
+++ b/config/sync/core.entity_view_display.node.custom_page.default.yml
@@ -3,7 +3,6 @@ langcode: en
 status: true
 dependencies:
   config:
-    - field.field.node.custom_page.body
     - field.field.node.custom_page.field_attachment
     - field.field.node.custom_page.field_cp_content_listing
     - field.field.node.custom_page.field_custom_page_logo
@@ -94,7 +93,6 @@ content:
     third_party_settings: {  }
     type: link
 hidden:
-  body: true
   field_custom_page_logo: true
   langcode: true
   og_audience: true
diff --git a/config/sync/core.entity_view_display.node.custom_page.view_mode_featured.yml b/config/sync/core.entity_view_display.node.custom_page.view_mode_featured.yml
index f29100f9eb..a9927b6252 100644
--- a/config/sync/core.entity_view_display.node.custom_page.view_mode_featured.yml
+++ b/config/sync/core.entity_view_display.node.custom_page.view_mode_featured.yml
@@ -4,7 +4,6 @@ status: true
 dependencies:
   config:
     - core.entity_view_mode.node.view_mode_featured
-    - field.field.node.custom_page.body
     - field.field.node.custom_page.field_attachment
     - field.field.node.custom_page.field_cp_content_listing
     - field.field.node.custom_page.field_custom_page_logo
@@ -35,7 +34,6 @@ content:
       template_suggestion:
         template_suggestion: ''
 hidden:
-  body: true
   field_attachment: true
   field_cp_content_listing: true
   field_custom_page_logo: true
diff --git a/config/sync/core.entity_view_display.node.custom_page.view_mode_tile.yml b/config/sync/core.entity_view_display.node.custom_page.view_mode_tile.yml
index 1aeb0e6d53..23e2efa451 100644
--- a/config/sync/core.entity_view_display.node.custom_page.view_mode_tile.yml
+++ b/config/sync/core.entity_view_display.node.custom_page.view_mode_tile.yml
@@ -4,7 +4,6 @@ status: true
 dependencies:
   config:
     - core.entity_view_mode.node.view_mode_tile
-    - field.field.node.custom_page.body
     - field.field.node.custom_page.field_attachment
     - field.field.node.custom_page.field_cp_content_listing
     - field.field.node.custom_page.field_custom_page_logo
@@ -35,7 +34,6 @@ content:
       template_suggestion:
         template_suggestion: ''
 hidden:
-  body: true
   field_attachment: true
   field_cp_content_listing: true
   field_paragraphs_body: true
diff --git a/config/sync/field.field.node.custom_page.body.yml b/config/sync/field.field.node.custom_page.body.yml
deleted file mode 100644
index 9d0c66d224..0000000000
--- a/config/sync/field.field.node.custom_page.body.yml
+++ /dev/null
@@ -1,37 +0,0 @@
-uuid: 3f4c513b-f3d9-4d37-919a-375b5f8d8cb6
-langcode: en
-status: true
-dependencies:
-  config:
-    - field.storage.node.body
-    - node.type.custom_page
-  module:
-    - allowed_formats
-    - text
-third_party_settings:
-  allowed_formats:
-    content_editor: content_editor
-    basic_html: '0'
-    eira_format: '0'
-    licence: '0'
-    restricted_html: '0'
-    simple_html: '0'
-    simple_text: '0'
-    full_html: '0'
-    plain_text: '0'
-_core:
-  default_config_hash: MYE4qG23Xk8I6KYd15pk0PKdvWfDFQ0PNzZbw7m8UFk
-id: node.custom_page.body
-field_name: body
-entity_type: node
-bundle: custom_page
-label: Body
-description: ''
-required: false
-translatable: false
-default_value: {  }
-default_value_callback: ''
-settings:
-  display_summary: false
-  required_summary: false
-field_type: text_with_summary
diff --git a/web/modules/custom/custom_page/config/install/field.field.node.custom_page.body.yml b/web/modules/custom/custom_page/config/install/field.field.node.custom_page.body.yml
deleted file mode 100644
index 740fdc4a25..0000000000
--- a/web/modules/custom/custom_page/config/install/field.field.node.custom_page.body.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-langcode: en
-status: true
-dependencies:
-  config:
-    - field.storage.node.body
-    - node.type.custom_page
-  module:
-    - allowed_formats
-    - text
-third_party_settings:
-  allowed_formats:
-    content_editor: content_editor
-    basic_html: '0'
-    simple_html: '0'
-    simple_text: '0'
-    plain_text: '0'
-id: node.custom_page.body
-field_name: body
-entity_type: node
-bundle: custom_page
-label: Body
-description: ''
-required: false
-translatable: false
-default_value: {  }
-default_value_callback: ''
-settings:
-  display_summary: true
-  required_summary: false
-field_type: text_with_summary
diff --git a/web/modules/custom/custom_page/config/optional/core.entity_form_display.node.custom_page.default.yml b/web/modules/custom/custom_page/config/optional/core.entity_form_display.node.custom_page.default.yml
index 90afacef2d..dc19e64ef9 100644
--- a/web/modules/custom/custom_page/config/optional/core.entity_form_display.node.custom_page.default.yml
+++ b/web/modules/custom/custom_page/config/optional/core.entity_form_display.node.custom_page.default.yml
@@ -2,7 +2,6 @@ langcode: en
 status: true
 dependencies:
   config:
-    - field.field.node.custom_page.body
     - field.field.node.custom_page.field_attachment
     - field.field.node.custom_page.field_cp_content_listing
     - field.field.node.custom_page.field_custom_page_logo
@@ -11,29 +10,15 @@ dependencies:
     - image.style.thumbnail
     - node.type.custom_page
   module:
-    - allowed_formats
     - custom_page
     - file
     - image
-    - text
+    - paragraphs
 id: node.custom_page.default
 targetEntityType: node
 bundle: custom_page
 mode: default
 content:
-  body:
-    type: text_textarea_with_summary
-    weight: 2
-    settings:
-      rows: 9
-      placeholder: ''
-      summary_rows: 3
-      show_summary: false
-    third_party_settings:
-      allowed_formats:
-        hide_help: '0'
-        hide_guidelines: '1'
-    region: content
   field_attachment:
     weight: 5
     settings:
@@ -56,6 +41,18 @@ content:
     third_party_settings: {  }
     type: image_image
     region: content
+  field_paragraphs_body:
+    type: entity_reference_paragraphs
+    weight: 2
+    region: content
+    settings:
+      title: Paragraph
+      title_plural: Paragraphs
+      edit_mode: open
+      add_mode: dropdown
+      form_display_mode: default
+      default_paragraph_type: simple_paragraph
+    third_party_settings: {  }
   langcode:
     type: language_select
     weight: 1
@@ -86,7 +83,6 @@ content:
 hidden:
   created: true
   current_workflow_state: true
-  field_paragraphs_body: true
   og_audience: true
   path: true
   promote: true
diff --git a/web/modules/custom/custom_page/config/optional/core.entity_view_display.node.custom_page.default.yml b/web/modules/custom/custom_page/config/optional/core.entity_view_display.node.custom_page.default.yml
index a8733af131..6c02d943fa 100644
--- a/web/modules/custom/custom_page/config/optional/core.entity_view_display.node.custom_page.default.yml
+++ b/web/modules/custom/custom_page/config/optional/core.entity_view_display.node.custom_page.default.yml
@@ -2,7 +2,6 @@ langcode: en
 status: true
 dependencies:
   config:
-    - field.field.node.custom_page.body
     - field.field.node.custom_page.field_attachment
     - field.field.node.custom_page.field_cp_content_listing
     - field.field.node.custom_page.field_custom_page_logo
@@ -10,6 +9,7 @@ dependencies:
     - field.field.node.custom_page.og_audience
     - node.type.custom_page
   module:
+    - entity_reference_revisions
     - field_group
     - file
     - link
@@ -41,13 +41,6 @@ targetEntityType: node
 bundle: custom_page
 mode: default
 content:
-  body:
-    label: hidden
-    type: text_default
-    weight: 1
-    settings: {  }
-    third_party_settings: {  }
-    region: content
   field_attachment:
     weight: 51
     label: hidden
@@ -65,6 +58,15 @@ content:
     label: hidden
     settings: {  }
     third_party_settings: {  }
+  field_paragraphs_body:
+    type: entity_reference_revisions_entity_view
+    weight: 1
+    region: content
+    label: hidden
+    settings:
+      view_mode: default
+      link: ''
+    third_party_settings: {  }
   links:
     weight: 0
     region: content
@@ -89,7 +91,6 @@ content:
     type: link
 hidden:
   field_custom_page_logo: true
-  field_paragraphs_body: true
   langcode: true
   og_audience: true
   published_at: true
diff --git a/web/modules/custom/custom_page/config/optional/core.entity_view_display.node.custom_page.view_mode_featured.yml b/web/modules/custom/custom_page/config/optional/core.entity_view_display.node.custom_page.view_mode_featured.yml
index eb8874e84e..0736f0a58e 100644
--- a/web/modules/custom/custom_page/config/optional/core.entity_view_display.node.custom_page.view_mode_featured.yml
+++ b/web/modules/custom/custom_page/config/optional/core.entity_view_display.node.custom_page.view_mode_featured.yml
@@ -3,7 +3,6 @@ status: true
 dependencies:
   config:
     - core.entity_view_mode.node.view_mode_featured
-    - field.field.node.custom_page.body
     - field.field.node.custom_page.field_attachment
     - field.field.node.custom_page.field_cp_content_listing
     - field.field.node.custom_page.field_custom_page_logo
@@ -11,6 +10,7 @@ dependencies:
     - field.field.node.custom_page.og_audience
     - node.type.custom_page
   module:
+    - entity_reference_revisions
     - smart_trim
     - template_suggestion
     - user
@@ -19,31 +19,21 @@ targetEntityType: node
 bundle: custom_page
 mode: view_mode_featured
 content:
-  body:
-    label: hidden
-    type: smart_trim
+  field_paragraphs_body:
+    type: entity_reference_revisions_entity_view
     weight: 0
+    region: content
+    label: hidden
     settings:
-      trim_length: 200
-      trim_type: chars
-      trim_suffix: …
-      more_link: false
-      more_text: More
-      summary_handler: trim
-      trim_options:
-        text: false
-      more_class: more-link
-      wrap_output: false
-      wrap_class: trimmed
+      view_mode: preview
+      link: ''
     third_party_settings:
       template_suggestion:
         template_suggestion: ''
-    region: content
 hidden:
   field_attachment: true
   field_cp_content_listing: true
   field_custom_page_logo: true
-  field_paragraphs_body: true
   langcode: true
   links: true
   node_field_cp_content_listing_top: true
diff --git a/web/modules/custom/custom_page/config/optional/core.entity_view_display.node.custom_page.view_mode_tile.yml b/web/modules/custom/custom_page/config/optional/core.entity_view_display.node.custom_page.view_mode_tile.yml
index ac4a7c00ed..a48c2c7b2a 100644
--- a/web/modules/custom/custom_page/config/optional/core.entity_view_display.node.custom_page.view_mode_tile.yml
+++ b/web/modules/custom/custom_page/config/optional/core.entity_view_display.node.custom_page.view_mode_tile.yml
@@ -3,7 +3,6 @@ status: true
 dependencies:
   config:
     - core.entity_view_mode.node.view_mode_tile
-    - field.field.node.custom_page.body
     - field.field.node.custom_page.field_attachment
     - field.field.node.custom_page.field_cp_content_listing
     - field.field.node.custom_page.field_custom_page_logo
@@ -32,7 +31,6 @@ content:
       template_suggestion:
         template_suggestion: ''
 hidden:
-  body: true
   field_attachment: true
   field_cp_content_listing: true
   field_paragraphs_body: true
diff --git a/web/modules/custom/custom_page/custom_page.info.yml b/web/modules/custom/custom_page/custom_page.info.yml
index b9b331a823..89664ed96b 100644
--- a/web/modules/custom/custom_page/custom_page.info.yml
+++ b/web/modules/custom/custom_page/custom_page.info.yml
@@ -23,7 +23,6 @@ config_devel:
     - core.base_field_override.node.custom_page.title
     - facets.facet.field_cp_content_listing_content_type
     - facets.facet_source.search_api_field__node.field_cp_content_listing
-    - field.field.node.custom_page.body
     - field.field.node.custom_page.field_attachment
     - field.field.node.custom_page.field_cp_content_listing
     - field.field.node.custom_page.field_custom_page_logo
diff --git a/web/modules/custom/custom_page/custom_page.post_update.php b/web/modules/custom/custom_page/custom_page.post_update.php
deleted file mode 100644
index 2098d63bef..0000000000
--- a/web/modules/custom/custom_page/custom_page.post_update.php
+++ /dev/null
@@ -1,38 +0,0 @@
-<?php
-
-/**
- * @file
- * Post update functions for the custom_page module.
- */
-
-declare(strict_types = 1);
-
-use Drupal\paragraphs\Entity\Paragraph;
-
-/**
- * Migrate the body field to the new paragraphs field for custom pages.
- */
-function custom_page_post_update_0106000(&$sandbox) {
-  if (!isset($sandbox['nids'])) {
-    $sandbox['nids'] = \Drupal::database()->query("SELECT nid FROM {node_field_data} n WHERE n.type = 'custom_page';")->fetchCol();
-    $sandbox['count'] = 0;
-    $sandbox['max'] = count($sandbox['nids']);
-  }
-
-  $limit = 10;
-  $nids = array_splice($sandbox['nids'], 0, $limit);
-  $node_storage = \Drupal::entityTypeManager()->getStorage('node');
-  foreach ($node_storage->loadMultiple($nids) as $custom_page) {
-    $paragraph = Paragraph::create([
-      'type' => 'simple_paragraph',
-    ]);
-    $paragraph->set('field_body', $custom_page->get('body')->getValue());
-    $paragraph->save();
-    $custom_page->set('field_paragraphs_body', $paragraph);
-    $custom_page->save();
-    $sandbox['count']++;
-  }
-
-  $sandbox['#finished'] = (int) empty($sandbox['nids']);
-  return "Processed {$sandbox['count']} items out of {$sandbox['max']}.";
-}
diff --git a/web/modules/custom/joinup_core/joinup_core.post_update.php b/web/modules/custom/joinup_core/joinup_core.post_update.php
index 49751978fd..51f0ad6d8e 100644
--- a/web/modules/custom/joinup_core/joinup_core.post_update.php
+++ b/web/modules/custom/joinup_core/joinup_core.post_update.php
@@ -6,3 +6,109 @@
  */
 
 declare(strict_types = 1);
+
+/**
+ * Migrate the body field to the new paragraphs field for custom pages.
+ */
+function joinup_core_post_update_0106101(array &$sandbox): string {
+  $db = \Drupal::database();
+  /** @var \Drupal\Component\Uuid\UuidInterface $uuid */
+  $uuid = \Drupal::service('uuid');
+
+  if (!isset($sandbox['nids'])) {
+    $sandbox['nids'] = $db->query("SELECT nid FROM {node_field_data} n WHERE n.type = 'custom_page'")->fetchCol();
+    $sandbox['max'] = count($sandbox['nids']);
+    // The paragraph ID.
+    $sandbox['id'] = 0;
+    // The paragraph revision ID.
+    $sandbox['revision_id'] = 0;
+  }
+
+  $nids_to_process = array_splice($sandbox['nids'], 0, 150);
+  foreach ($nids_to_process as $nid) {
+    $sandbox['id']++;
+
+    // Get all revision data for a given custom page.
+    $revisions = $db->query("SELECT nfr.nid, nfr.vid, nr.revision_timestamp AS created, nrb.body_value AS body FROM {node_field_revision} nfr INNER JOIN {node_field_data} nfd ON nfr.nid = nfd.nid INNER JOIN {node_revision} nr ON nfr.vid = nr.vid LEFT JOIN {node_revision__body} nrb ON nfr.vid = nrb.revision_id WHERE nfd.type = 'custom_page' AND nfr.nid = :nid ORDER BY nfr.vid", [
+      ':nid' => $nid,
+    ])->fetchAll();
+
+    // First update the revision tables. As we're sorted by the node revision
+    // ID, the last iteration value is also used later as default values.
+    foreach ($revisions as $revision) {
+      $sandbox['revision_id']++;
+      if (!empty($revision->body)) {
+        $body_row = [
+          'bundle' => 'simple_paragraph',
+          'entity_id' => $sandbox['id'],
+          'revision_id' => $sandbox['revision_id'],
+          'langcode' => 'en',
+          'delta' => 0,
+          'field_body_value' => $revision->body,
+          'field_body_format' => 'content_editor',
+        ];
+        $db->insert('paragraph_revision__field_body')->fields($body_row)->execute();
+      }
+      $data_row = [
+        'id' => $sandbox['id'],
+        'revision_id' => $sandbox['revision_id'],
+        'langcode' => 'en',
+        'status' => 1,
+        'created' => $revision->created,
+        'parent_id' => $nid,
+        'parent_type' => 'node',
+        'parent_field_name' => 'field_paragraphs_body',
+        'behavior_settings' => 'a:0:{}',
+        'default_langcode' => 1,
+        'revision_translation_affected' => 1,
+      ];
+      $db->insert('paragraphs_item_revision_field_data')->fields($data_row)->execute();
+      $db->insert('paragraphs_item_revision')->fields([
+        'id' => $sandbox['id'],
+        'revision_id' => $sandbox['revision_id'],
+        'langcode' => 'en',
+        'revision_default' => 1,
+      ])->execute();
+
+      // Add a record in the node revision 'field_paragraphs_body' field.
+      $host_entity_data = [
+        'bundle' => 'custom_page',
+        'deleted' => 0,
+        'entity_id' => $nid,
+        'revision_id' => $revision->vid,
+        'langcode' => 'en',
+        'delta' => 0,
+        'field_paragraphs_body_target_id' => $sandbox['id'],
+        'field_paragraphs_body_target_revision_id' => $sandbox['revision_id'],
+      ];
+      $db->insert('node_revision__field_paragraphs_body')->fields($host_entity_data)->execute();
+    }
+
+    // Update main tables.
+    if (!empty($revision->body)) {
+      $db->insert('paragraph__field_body')->fields($body_row)->execute();
+    }
+    $data_row['type'] = 'simple_paragraph';
+    $db->insert('paragraphs_item_field_data')->fields($data_row)->execute();
+    $db->insert('paragraphs_item')->fields([
+      'id' => $sandbox['id'],
+      'revision_id' => $sandbox['revision_id'],
+      'type' => 'simple_paragraph',
+      'uuid' => $uuid->generate(),
+      'langcode' => 'en',
+    ])->execute();
+
+    // Add a record in the node 'field_paragraphs_body' field.
+    $db->insert('node__field_paragraphs_body')->fields($host_entity_data)->execute();
+  }
+
+  $sandbox['#finished'] = (int) empty($sandbox['nids']);
+
+  if ($sandbox['#finished']) {
+    // Cleanup stale body content.
+    $db->delete('node__body')->condition('bundle', 'custom_page')->execute();
+    $db->delete('node_revision__body')->condition('bundle', 'custom_page')->execute();
+  }
+
+  return "Processed {$sandbox['id']} items out of {$sandbox['max']}.";
+}