diff --git a/src/admin/components/elements/DuplicateDocument/index.scss b/src/admin/components/elements/DuplicateDocument/index.scss
index e69de29bb2..a2c98b20e6 100644
--- a/src/admin/components/elements/DuplicateDocument/index.scss
+++ b/src/admin/components/elements/DuplicateDocument/index.scss
@@ -0,0 +1,22 @@
+@import '../../../scss/styles.scss';
+
+.duplicate {
+
+  &__modal {
+    @include blur-bg;
+    display: flex;
+    align-items: center;
+    height: 100%;
+
+    .btn {
+      margin-right: $baseline;
+    }
+  }
+
+  &__modal-template {
+    z-index: 1;
+    position: relative;
+  }
+
+
+}
diff --git a/src/admin/components/elements/DuplicateDocument/index.tsx b/src/admin/components/elements/DuplicateDocument/index.tsx
index 5c59984e2a..7cccfaf825 100644
--- a/src/admin/components/elements/DuplicateDocument/index.tsx
+++ b/src/admin/components/elements/DuplicateDocument/index.tsx
@@ -1,39 +1,143 @@
-import React, { useCallback } from 'react';
+import React, { useCallback, useState } from 'react';
 import { useHistory } from 'react-router-dom';
+import { toast } from 'react-toastify';
+import { Modal, useModal } from '@faceless-ui/modal';
 import { useConfig } from '../../utilities/Config';
 import { Props } from './types';
 import Button from '../Button';
-import { useForm } from '../../forms/Form/context';
+import { requests } from '../../../api';
+import { useForm, useFormModified } from '../../forms/Form/context';
+import MinimalTemplate from '../../templates/Minimal';
 
 import './index.scss';
 
 const baseClass = 'duplicate';
 
-const Duplicate: React.FC<Props> = ({ slug }) => {
+const Duplicate: React.FC<Props> = ({ slug, collection, id }) => {
   const { push } = useHistory();
-  const { getData } = useForm();
+  const modified = useFormModified();
+  const { toggle } = useModal();
+  const { setModified } = useForm();
+  const { serverURL, routes: { api }, localization } = useConfig();
   const { routes: { admin } } = useConfig();
+  const [hasClicked, setHasClicked] = useState<boolean>(false);
 
-  const handleClick = useCallback(() => {
-    const data = getData();
+  const modalSlug = `duplicate-${id}`;
 
-    push({
-      pathname: `${admin}/collections/${slug}/create`,
-      state: {
-        data,
-      },
-    });
-  }, [push, getData, slug, admin]);
+  const handleClick = useCallback(async (override = false) => {
+    setHasClicked(true);
+
+    if (modified && !override) {
+      toggle(modalSlug);
+      return;
+    }
+
+    const create = async (locale?: string): Promise<string | null> => {
+      const localeParam = locale ? `locale=${locale}` : '';
+      const response = await requests.get(`${serverURL}${api}/${slug}/${id}?${localeParam}`);
+      const data = await response.json();
+      const result = await requests.post(`${serverURL}${api}/${slug}`, {
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify(data),
+      });
+      const json = await result.json();
+
+      if (result.status === 201) {
+        return json.doc.id;
+      }
+      json.errors.forEach((error) => toast.error(error.message));
+      return null;
+    };
+
+    let duplicateID;
+    if (localization) {
+      duplicateID = await create(localization.defaultLocale);
+      let abort = false;
+      localization.locales
+        .filter((locale) => locale !== localization.defaultLocale)
+        .forEach(async (locale) => {
+          if (!abort) {
+            const res = await requests.get(`${serverURL}${api}/${slug}/${id}?locale=${locale}`);
+            const localizedDoc = await res.json();
+            const patchResult = await requests.patch(`${serverURL}${api}/${slug}/${duplicateID}?locale=${locale}`, {
+              headers: {
+                'Content-Type': 'application/json',
+              },
+              body: JSON.stringify(localizedDoc),
+            });
+            if (patchResult.status > 400) {
+              abort = true;
+              const json = await patchResult.json();
+              json.errors.forEach((error) => toast.error(error.message));
+            }
+          }
+        });
+      if (abort) {
+        // delete the duplicate doc to prevent incomplete
+        await requests.delete(`${serverURL}${api}/${slug}/${id}`);
+      }
+    } else {
+      duplicateID = await create();
+    }
+
+    toast.success(`${collection.labels.singular} successfully duplicated.`,
+      { autoClose: 3000 });
+
+    const previousModifiedState = modified;
+    setModified(false);
+    setTimeout(() => {
+      push({
+        pathname: `${admin}/collections/${slug}/${duplicateID}`,
+      });
+      setModified(previousModifiedState);
+    }, 10);
+  }, [modified, localization, collection.labels.singular, setModified, toggle, modalSlug, serverURL, api, slug, id, push, admin]);
+
+  const confirm = useCallback(async () => {
+    setHasClicked(false);
+    await handleClick(true);
+  }, [handleClick]);
 
   return (
-    <Button
-      id="action-duplicate"
-      buttonStyle="none"
-      className={baseClass}
-      onClick={handleClick}
-    >
-      Duplicate
-    </Button>
+    <React.Fragment>
+      <Button
+        id="action-duplicate"
+        buttonStyle="none"
+        className={baseClass}
+        onClick={() => handleClick(false)}
+      >
+        Duplicate
+      </Button>
+      { modified && hasClicked && (
+        <Modal
+          slug={modalSlug}
+          className={`${baseClass}__modal`}
+        >
+          <MinimalTemplate className={`${baseClass}__modal-template`}>
+            <h1>Confirm duplicate</h1>
+            <p>
+              You have unsaved changes. Would you like to continue to duplicate?
+            </p>
+            <Button
+              id="confirm-cancel"
+              buttonStyle="secondary"
+              type="button"
+              onClick={() => toggle(modalSlug)}
+            >
+              Cancel
+            </Button>
+            <Button
+              onClick={confirm}
+              id="confirm-duplicate"
+            >
+              Duplicate without saving changes
+            </Button>
+          </MinimalTemplate>
+        </Modal>
+      ) }
+    </React.Fragment>
   );
 };
 
diff --git a/src/admin/components/elements/DuplicateDocument/types.ts b/src/admin/components/elements/DuplicateDocument/types.ts
index ac7846166d..ef5ca4f490 100644
--- a/src/admin/components/elements/DuplicateDocument/types.ts
+++ b/src/admin/components/elements/DuplicateDocument/types.ts
@@ -1,3 +1,7 @@
+import { SanitizedCollectionConfig } from '../../../../collections/config/types';
+
 export type Props = {
- slug: string,
+ slug: string
+ collection: SanitizedCollectionConfig
+ id: string
 }
diff --git a/src/admin/components/views/collections/Edit/Default.tsx b/src/admin/components/views/collections/Edit/Default.tsx
index 319ee9a973..94b5acf5d0 100644
--- a/src/admin/components/views/collections/Edit/Default.tsx
+++ b/src/admin/components/views/collections/Edit/Default.tsx
@@ -142,8 +142,14 @@ const DefaultEditView: React.FC<Props> = (props) => {
                           Create New
                         </Link>
                       </li>
-                      {!disableDuplicate && (
-                      <li><DuplicateDocument slug={slug} /></li>
+                      {!disableDuplicate && isEditing && (
+                      <li>
+                        <DuplicateDocument
+                          collection={collection}
+                          id={id}
+                          slug={slug}
+                        />
+                      </li>
                       )}
                     </React.Fragment>
                     )}
diff --git a/test/localization/e2e.spec.ts b/test/localization/e2e.spec.ts
index df362cb798..39642e8384 100644
--- a/test/localization/e2e.spec.ts
+++ b/test/localization/e2e.spec.ts
@@ -1,11 +1,13 @@
 import type { Page } from '@playwright/test';
 import { expect, test } from '@playwright/test';
+import payload from '../../src';
 import type { TypeWithTimestamps } from '../../src/collections/config/types';
 import { AdminUrlUtil } from '../helpers/adminUrlUtil';
 import { initPayloadTest } from '../helpers/configHelpers';
 import { login, saveDocAndAssert } from '../helpers';
 import type { LocalizedPost } from './payload-types';
 import { slug } from './config';
+import { englishTitle, spanishLocale } from './shared';
 
 /**
  * TODO: Localization
@@ -93,6 +95,40 @@ describe('Localization', () => {
       await expect(page.locator('#field-description')).toHaveValue(description);
     });
   });
+
+  describe('localized duplicate', () => {
+    let id;
+
+    beforeAll(async () => {
+      const localizedPost = await payload.create<LocalizedPost>({
+        collection: slug,
+        data: {
+          title: englishTitle,
+        },
+      });
+      id = localizedPost.id;
+      await payload.update<LocalizedPost>({
+        collection: slug,
+        id,
+        locale: spanishLocale,
+        data: {
+          title: spanishTitle,
+        },
+      });
+    });
+
+    test('should duplicate data for all locales', async () => {
+      await page.goto(url.edit(id));
+
+      await page.locator('.btn.duplicate').first().click();
+      await expect(page.locator('.Toastify')).toContainText('successfully');
+
+      await expect(page.locator('#field-title')).toHaveValue(englishTitle);
+
+      await changeLocale(spanishLocale);
+      await expect(page.locator('#field-title')).toHaveValue(spanishTitle);
+    });
+  });
 });
 
 async function fillValues(data: Partial<Omit<LocalizedPost, keyof TypeWithTimestamps>>) {