diff --git a/ts/components/CompositionArea.stories.tsx b/ts/components/CompositionArea.stories.tsx
index b607e986bd..69bcbb4520 100644
--- a/ts/components/CompositionArea.stories.tsx
+++ b/ts/components/CompositionArea.stories.tsx
@@ -105,7 +105,7 @@ const useProps = (overrideProps: Partial<Props> = {}): Props => ({
   ),
   title: '',
   // GroupV1 Disabled Actions
-  onStartGroupMigration: action('onStartGroupMigration'),
+  showGV2MigrationDialog: action('showGV2MigrationDialog'),
   // GroupV2
   announcementsOnly: boolean(
     'announcementsOnly',
diff --git a/ts/components/CompositionArea.tsx b/ts/components/CompositionArea.tsx
index fefd5a3566..fcc51c67b6 100644
--- a/ts/components/CompositionArea.tsx
+++ b/ts/components/CompositionArea.tsx
@@ -162,7 +162,7 @@ export type Props = Pick<
     | 'clearShowPickerHint'
   > &
   MessageRequestActionsProps &
-  Pick<GroupV1DisabledActionsPropsType, 'onStartGroupMigration'> &
+  Pick<GroupV1DisabledActionsPropsType, 'showGV2MigrationDialog'> &
   Pick<GroupV2PendingApprovalActionsPropsType, 'onCancelJoinRequest'> &
   OwnProps;
 
@@ -244,7 +244,7 @@ export function CompositionArea({
   title,
   // GroupV1 Disabled Actions
   isGroupV1AndDisabled,
-  onStartGroupMigration,
+  showGV2MigrationDialog,
   // GroupV2
   announcementsOnly,
   areWeAdmin,
@@ -561,8 +561,9 @@ export function CompositionArea({
   if (!left && isGroupV1AndDisabled) {
     return (
       <GroupV1DisabledActions
+        conversationId={conversationId}
         i18n={i18n}
-        onStartGroupMigration={onStartGroupMigration}
+        showGV2MigrationDialog={showGV2MigrationDialog}
       />
     );
   }
diff --git a/ts/components/GroupV1MigrationDialog.stories.tsx b/ts/components/GroupV1MigrationDialog.stories.tsx
index 97f6ba25ed..ed53a17685 100644
--- a/ts/components/GroupV1MigrationDialog.stories.tsx
+++ b/ts/components/GroupV1MigrationDialog.stories.tsx
@@ -35,6 +35,7 @@ const contact3: ConversationType = getDefaultConversation({
 
 const createProps = (overrideProps: Partial<PropsType> = {}): PropsType => ({
   areWeInvited: Boolean(overrideProps.areWeInvited),
+  conversationId: '123',
   droppedMembers: overrideProps.droppedMembers || [contact3, contact1],
   getPreferredBadge: () => undefined,
   hasMigrated: Boolean(overrideProps.hasMigrated),
diff --git a/ts/components/GroupV1MigrationDialog.tsx b/ts/components/GroupV1MigrationDialog.tsx
index 41623fb977..c05cf7974f 100644
--- a/ts/components/GroupV1MigrationDialog.tsx
+++ b/ts/components/GroupV1MigrationDialog.tsx
@@ -8,39 +8,62 @@ import type { PreferredBadgeSelectorType } from '../state/selectors/badges';
 import { GroupDialog } from './GroupDialog';
 import { sortByTitle } from '../util/sortByTitle';
 
-type CallbackType = () => unknown;
-
 export type DataPropsType = {
+  conversationId: string;
   readonly areWeInvited: boolean;
   readonly droppedMembers: Array<ConversationType>;
   readonly hasMigrated: boolean;
   readonly invitedMembers: Array<ConversationType>;
-  readonly migrate: CallbackType;
-  readonly onClose: CallbackType;
-};
-
-export type HousekeepingPropsType = {
   readonly getPreferredBadge: PreferredBadgeSelectorType;
   readonly i18n: LocalizerType;
   readonly theme: ThemeType;
 };
 
-export type PropsType = DataPropsType & HousekeepingPropsType;
+type ActionsPropsType =
+  | {
+      initiateMigrationToGroupV2: (conversationId: string) => unknown;
+      closeGV2MigrationDialog: () => unknown;
+    }
+  | {
+      readonly migrate: () => unknown;
+      readonly onClose: () => unknown;
+    };
+
+export type PropsType = DataPropsType & ActionsPropsType;
 
 export const GroupV1MigrationDialog: React.FunctionComponent<PropsType> =
   React.memo(function GroupV1MigrationDialogInner(props: PropsType) {
     const {
       areWeInvited,
+      conversationId,
       droppedMembers,
       getPreferredBadge,
       hasMigrated,
       i18n,
       invitedMembers,
-      migrate,
-      onClose,
       theme,
     } = props;
 
+    let migrateHandler;
+    if ('migrate' in props) {
+      migrateHandler = props.migrate;
+    } else if ('initiateMigrationToGroupV2' in props) {
+      migrateHandler = () => props.initiateMigrationToGroupV2(conversationId);
+    } else {
+      throw new Error(
+        'GroupV1MigrationDialog: No conversationId or migration function'
+      );
+    }
+
+    let closeHandler;
+    if ('onClose' in props) {
+      closeHandler = props.onClose;
+    } else if ('closeGV2MigrationDialog' in props) {
+      closeHandler = props.closeGV2MigrationDialog;
+    } else {
+      throw new Error('GroupV1MigrationDialog: No close function provided');
+    }
+
     const title = hasMigrated
       ? i18n('GroupV1--Migration--info--title')
       : i18n('GroupV1--Migration--migrate--title');
@@ -60,13 +83,13 @@ export const GroupV1MigrationDialog: React.FunctionComponent<PropsType> =
         };
     if (hasMigrated) {
       primaryButtonText = i18n('Confirmation--confirm');
-      onClickPrimaryButton = onClose;
+      onClickPrimaryButton = closeHandler;
     } else {
       primaryButtonText = i18n('GroupV1--Migration--migrate');
-      onClickPrimaryButton = migrate;
+      onClickPrimaryButton = migrateHandler;
       secondaryButtonProps = {
         secondaryButtonText: i18n('cancel'),
-        onClickSecondaryButton: onClose,
+        onClickSecondaryButton: closeHandler,
       };
     }
 
@@ -74,7 +97,7 @@ export const GroupV1MigrationDialog: React.FunctionComponent<PropsType> =
       <GroupDialog
         i18n={i18n}
         onClickPrimaryButton={onClickPrimaryButton}
-        onClose={onClose}
+        onClose={closeHandler}
         primaryButtonText={primaryButtonText}
         title={title}
         {...secondaryButtonProps}
diff --git a/ts/components/conversation/GroupV1DisabledActions.stories.tsx b/ts/components/conversation/GroupV1DisabledActions.stories.tsx
index 86416f35e3..f518d76547 100644
--- a/ts/components/conversation/GroupV1DisabledActions.stories.tsx
+++ b/ts/components/conversation/GroupV1DisabledActions.stories.tsx
@@ -12,8 +12,9 @@ import enMessages from '../../../_locales/en/messages.json';
 const i18n = setupI18n('en', enMessages);
 
 const createProps = (): GroupV1DisabledActionsPropsType => ({
+  conversationId: '123',
   i18n,
-  onStartGroupMigration: action('onStartGroupMigration'),
+  showGV2MigrationDialog: action('showGV2MigrationDialog'),
 });
 
 export default {
diff --git a/ts/components/conversation/GroupV1DisabledActions.tsx b/ts/components/conversation/GroupV1DisabledActions.tsx
index 3b09f0c261..9a804bf4ac 100644
--- a/ts/components/conversation/GroupV1DisabledActions.tsx
+++ b/ts/components/conversation/GroupV1DisabledActions.tsx
@@ -6,13 +6,15 @@ import { Intl } from '../Intl';
 import type { LocalizerType } from '../../types/Util';
 
 export type PropsType = {
+  conversationId: string;
   i18n: LocalizerType;
-  onStartGroupMigration: () => unknown;
+  showGV2MigrationDialog: (id: string) => unknown;
 };
 
 export function GroupV1DisabledActions({
+  conversationId,
   i18n,
-  onStartGroupMigration,
+  showGV2MigrationDialog,
 }: PropsType): JSX.Element {
   return (
     <div className="module-group-v1-disabled-actions">
@@ -37,7 +39,7 @@ export function GroupV1DisabledActions({
       <div className="module-group-v1-disabled-actions__buttons">
         <button
           type="button"
-          onClick={onStartGroupMigration}
+          onClick={() => showGV2MigrationDialog(conversationId)}
           tabIndex={0}
           className="module-group-v1-disabled-actions__buttons__button"
         >
diff --git a/ts/components/conversation/GroupV1Migration.stories.tsx b/ts/components/conversation/GroupV1Migration.stories.tsx
index 842bb411f2..dac5c30b4e 100644
--- a/ts/components/conversation/GroupV1Migration.stories.tsx
+++ b/ts/components/conversation/GroupV1Migration.stories.tsx
@@ -31,6 +31,7 @@ const createProps = (overrideProps: Partial<PropsType> = {}): PropsType => ({
     'areWeInvited',
     isBoolean(overrideProps.areWeInvited) ? overrideProps.areWeInvited : false
   ),
+  conversationId: '123',
   droppedMembers: overrideProps.droppedMembers || [contact1],
   getPreferredBadge: () => undefined,
   i18n,
diff --git a/ts/components/conversation/GroupV1Migration.tsx b/ts/components/conversation/GroupV1Migration.tsx
index 99ae954a98..06bc49bb01 100644
--- a/ts/components/conversation/GroupV1Migration.tsx
+++ b/ts/components/conversation/GroupV1Migration.tsx
@@ -15,6 +15,7 @@ import * as log from '../../logging/log';
 
 export type PropsDataType = {
   areWeInvited: boolean;
+  conversationId: string;
   droppedMembers: Array<ConversationType>;
   invitedMembers: Array<ConversationType>;
 };
@@ -30,6 +31,7 @@ export type PropsType = PropsDataType & PropsHousekeepingType;
 export function GroupV1Migration(props: PropsType): React.ReactElement {
   const {
     areWeInvited,
+    conversationId,
     droppedMembers,
     getPreferredBadge,
     i18n,
@@ -86,6 +88,7 @@ export function GroupV1Migration(props: PropsType): React.ReactElement {
       {showingDialog ? (
         <GroupV1MigrationDialog
           areWeInvited={areWeInvited}
+          conversationId={conversationId}
           droppedMembers={droppedMembers}
           getPreferredBadge={getPreferredBadge}
           hasMigrated
diff --git a/ts/signal.ts b/ts/signal.ts
index 1be3c13648..2ebee20576 100644
--- a/ts/signal.ts
+++ b/ts/signal.ts
@@ -28,7 +28,6 @@ import { createChatColorPicker } from './state/roots/createChatColorPicker';
 import { createConversationDetails } from './state/roots/createConversationDetails';
 import { createApp } from './state/roots/createApp';
 import { createGroupLinkManagement } from './state/roots/createGroupLinkManagement';
-import { createGroupV1MigrationModal } from './state/roots/createGroupV1MigrationModal';
 import { createGroupV2JoinModal } from './state/roots/createGroupV2JoinModal';
 import { createMessageDetail } from './state/roots/createMessageDetail';
 import { createConversationNotificationsSettings } from './state/roots/createConversationNotificationsSettings';
@@ -410,7 +409,6 @@ export const setup = (options: {
     createChatColorPicker,
     createConversationDetails,
     createGroupLinkManagement,
-    createGroupV1MigrationModal,
     createGroupV2JoinModal,
     createGroupV2Permissions,
     createMessageDetail,
diff --git a/ts/state/ducks/conversations.ts b/ts/state/ducks/conversations.ts
index 2ef67b0ff1..7bd4f3b9cf 100644
--- a/ts/state/ducks/conversations.ts
+++ b/ts/state/ducks/conversations.ts
@@ -107,6 +107,11 @@ import { denyPendingApprovalRequest } from '../../util/denyPendingApprovalReques
 import { SignalService as Proto } from '../../protobuf';
 import { addReportSpamJob } from '../../jobs/helpers/addReportSpamJob';
 import { reportSpamJobQueue } from '../../jobs/reportSpamJobQueue';
+import {
+  modifyGroupV2,
+  buildPromotePendingAdminApprovalMemberChange,
+  initiateMigrationToGroupV2 as doInitiateMigrationToGroupV2,
+} from '../../groups';
 
 // State
 
@@ -876,6 +881,7 @@ export const actions = {
   doubleCheckMissingQuoteReference,
   generateNewGroupLink,
   loadRecentMediaItems,
+  initiateMigrationToGroupV2,
   messageChanged,
   messageDeleted,
   messageExpanded,
@@ -2142,7 +2148,7 @@ function approvePendingMembershipFromGroupV2(
       isGroupV2(conversation.attributes) &&
       isMemberRequestingToJoin(conversation.attributes, uuid)
     ) {
-      await window.Signal.Groups.modifyGroupV2({
+      await modifyGroupV2({
         conversation,
         usingCredentialsFrom: [pendingMember],
         createGroupChange: async () => {
@@ -2157,12 +2163,10 @@ function approvePendingMembershipFromGroupV2(
             return undefined;
           }
 
-          return window.Signal.Groups.buildPromotePendingAdminApprovalMemberChange(
-            {
-              group: conversation.attributes,
-              uuid,
-            }
-          );
+          return buildPromotePendingAdminApprovalMemberChange({
+            group: conversation.attributes,
+            uuid,
+          });
         },
         name: 'approvePendingMembershipFromGroupV2',
       });
@@ -2362,6 +2366,26 @@ function deleteConversation(conversationId: string): NoopActionType {
   };
 }
 
+function initiateMigrationToGroupV2(conversationId: string): NoopActionType {
+  const conversation = window.ConversationController.get(conversationId);
+  if (!conversation) {
+    throw new Error(
+      'deleteConversation: Expected a conversation to be found. Doing nothing'
+    );
+  }
+
+  longRunningTaskWrapper({
+    idForLogging: conversation.idForLogging(),
+    name: 'initiateMigrationToGroupV2',
+    task: () => doInitiateMigrationToGroupV2(conversation),
+  });
+
+  return {
+    type: 'NOOP',
+    payload: null,
+  };
+}
+
 function loadRecentMediaItems(
   conversationId: string,
   limit: number
diff --git a/ts/state/ducks/globalModals.ts b/ts/state/ducks/globalModals.ts
index e8e5a62365..49801539c9 100644
--- a/ts/state/ducks/globalModals.ts
+++ b/ts/state/ducks/globalModals.ts
@@ -3,15 +3,19 @@
 
 import type { ThunkAction } from 'redux-thunk';
 import type { ExplodePromiseResultType } from '../../util/explodePromise';
+import type { GroupV2PendingMemberType } from '../../model-types.d';
 import type { PropsForMessage } from '../selectors/message';
+import type { RecipientsByConversation } from './stories';
 import type { SafetyNumberChangeSource } from '../../components/SafetyNumberChangeDialog';
 import type { StateType as RootStateType } from '../reducer';
 import type { UUIDStringType } from '../../types/UUID';
 import * as SingleServePromise from '../../services/singleServePromise';
 import { getMessageById } from '../../messages/getMessageById';
 import { getMessagePropsSelector } from '../selectors/message';
+import { longRunningTaskWrapper } from '../../util/longRunningTaskWrapper';
 import { useBoundActions } from '../../hooks/useBoundActions';
-import type { RecipientsByConversation } from './stories';
+import { isGroupV1 } from '../../util/whatTypeOfConversation';
+import { getGroupMigrationMembers } from '../../groups';
 
 // State
 
@@ -24,9 +28,19 @@ export type SafetyNumberChangedBlockingDataType = Readonly<{
   source?: SafetyNumberChangeSource;
 }>;
 
+type MigrateToGV2PropsType = {
+  areWeInvited: boolean;
+  conversationId: string;
+  droppedMemberIds: ReadonlyArray<string>;
+  hasMigrated: boolean;
+  invitedMemberIds: ReadonlyArray<string>;
+};
+
 export type GlobalModalsStateType = Readonly<{
+  addUserToAnotherGroupModalContactId?: string;
   contactModalState?: ContactModalStateType;
   forwardMessageProps?: ForwardMessagePropsType;
+  gv2MigrationProps?: MigrateToGV2PropsType;
   isProfileEditorVisible: boolean;
   isSignalConnectionsVisible: boolean;
   isStoriesSettingsVisible: boolean;
@@ -34,7 +48,6 @@ export type GlobalModalsStateType = Readonly<{
   profileEditorHasError: boolean;
   safetyNumberChangedBlockingData?: SafetyNumberChangedBlockingDataType;
   safetyNumberModalContactId?: string;
-  addUserToAnotherGroupModalContactId?: string;
   userNotFoundModalState?: UserNotFoundModalStateType;
 }>;
 
@@ -60,6 +73,8 @@ const TOGGLE_SIGNAL_CONNECTIONS_MODAL =
   'globalModals/TOGGLE_SIGNAL_CONNECTIONS_MODAL';
 export const SHOW_SEND_ANYWAY_DIALOG = 'globalModals/SHOW_SEND_ANYWAY_DIALOG';
 const HIDE_SEND_ANYWAY_DIALOG = 'globalModals/HIDE_SEND_ANYWAY_DIALOG';
+const SHOW_GV2_MIGRATION_DIALOG = 'globalModals/SHOW_GV2_MIGRATION_DIALOG';
+const CLOSE_GV2_MIGRATION_DIALOG = 'globalModals/CLOSE_GV2_MIGRATION_DIALOG';
 
 export type ContactModalStateType = {
   contactId: string;
@@ -137,6 +152,15 @@ type HideStoriesSettingsActionType = {
   type: typeof HIDE_STORIES_SETTINGS;
 };
 
+type StartMigrationToGV2ActionType = {
+  type: typeof SHOW_GV2_MIGRATION_DIALOG;
+  payload: MigrateToGV2PropsType;
+};
+
+type CloseGV2MigrationDialogActionType = {
+  type: typeof CLOSE_GV2_MIGRATION_DIALOG;
+};
+
 export type ShowSendAnywayDialogActionType = {
   type: typeof SHOW_SEND_ANYWAY_DIALOG;
   payload: SafetyNumberChangedBlockingDataType & {
@@ -149,6 +173,8 @@ type HideSendAnywayDialogActiontype = {
 };
 
 export type GlobalModalsActionType =
+  | StartMigrationToGV2ActionType
+  | CloseGV2MigrationDialogActionType
   | HideContactModalActionType
   | ShowContactModalActionType
   | HideWhatsNewModalActionType
@@ -185,6 +211,8 @@ export const actions = {
   toggleSafetyNumberModal,
   toggleAddUserToAnotherGroupModal,
   toggleSignalConnectionsModal,
+  showGV2MigrationDialog,
+  closeGV2MigrationDialog,
 };
 
 export const useGlobalModalActions = (): typeof actions =>
@@ -244,6 +272,57 @@ function showStoriesSettings(): ShowStoriesSettingsActionType {
   return { type: SHOW_STORIES_SETTINGS };
 }
 
+function showGV2MigrationDialog(
+  conversationId: string
+): ThunkAction<void, RootStateType, unknown, StartMigrationToGV2ActionType> {
+  return async dispatch => {
+    const conversation = window.ConversationController.get(conversationId);
+    if (!conversation) {
+      throw new Error(
+        'showGV2MigrationDialog: Expected a conversation to be found. Doing nothing'
+      );
+    }
+
+    const idForLogging = conversation.idForLogging();
+
+    if (!isGroupV1(conversation.attributes)) {
+      throw new Error(
+        `showGV2MigrationDialog/${idForLogging}: Cannot start, not a GroupV1 group`
+      );
+    }
+
+    // Note: this call will throw if, after generating member lists, we are no longer a
+    //   member or are in the pending member list.
+    const { droppedGV2MemberIds, pendingMembersV2 } =
+      await longRunningTaskWrapper({
+        idForLogging,
+        name: 'getGroupMigrationMembers',
+        task: () => getGroupMigrationMembers(conversation),
+      });
+
+    const invitedMemberIds = pendingMembersV2.map(
+      (item: GroupV2PendingMemberType) => item.uuid
+    );
+
+    dispatch({
+      type: SHOW_GV2_MIGRATION_DIALOG,
+      payload: {
+        areWeInvited: false,
+        conversationId,
+        droppedMemberIds: droppedGV2MemberIds,
+        hasMigrated: false,
+        invitedMemberIds,
+      },
+    });
+  };
+}
+
+function closeGV2MigrationDialog(): CloseGV2MigrationDialogActionType {
+  return {
+    type: CLOSE_GV2_MIGRATION_DIALOG,
+  };
+}
+
 function toggleForwardMessageModal(
   messageId?: string
 ): ThunkAction<
diff --git a/ts/state/roots/createGroupV1MigrationModal.tsx b/ts/state/roots/createGroupV1MigrationModal.tsx
deleted file mode 100644
index 04452643f2..0000000000
--- a/ts/state/roots/createGroupV1MigrationModal.tsx
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2020 Signal Messenger, LLC
-// SPDX-License-Identifier: AGPL-3.0-only
-
-import React from 'react';
-import { Provider } from 'react-redux';
-
-import type { Store } from 'redux';
-
-import type { PropsType } from '../smart/GroupV1MigrationDialog';
-import { SmartGroupV1MigrationDialog } from '../smart/GroupV1MigrationDialog';
-
-export const createGroupV1MigrationModal = (
-  store: Store,
-  props: PropsType
-): React.ReactElement => {
-  return (
-    <Provider store={store}>
-      <SmartGroupV1MigrationDialog {...props} />
-    </Provider>
-  );
-};
diff --git a/ts/state/selectors/message.ts b/ts/state/selectors/message.ts
index f8d6c92177..efb8a6b29d 100644
--- a/ts/state/selectors/message.ts
+++ b/ts/state/selectors/message.ts
@@ -1121,6 +1121,7 @@ function getPropsForGroupV1Migration(
 
     return {
       areWeInvited: false,
+      conversationId: message.conversationId,
       droppedMembers,
       invitedMembers,
     };
@@ -1140,6 +1141,7 @@ function getPropsForGroupV1Migration(
 
   return {
     areWeInvited,
+    conversationId: message.conversationId,
     droppedMembers,
     invitedMembers,
   };
diff --git a/ts/state/smart/ConversationView.tsx b/ts/state/smart/ConversationView.tsx
index 517b53617f..bbfae6696e 100644
--- a/ts/state/smart/ConversationView.tsx
+++ b/ts/state/smart/ConversationView.tsx
@@ -30,7 +30,6 @@ export type PropsType = {
     | 'onPickSticker'
     | 'onSelectMediaQuality'
     | 'onSendMessage'
-    | 'onStartGroupMigration'
     | 'onTextTooLong'
     | 'openConversation'
   >;
diff --git a/ts/state/smart/GroupV1MigrationDialog.tsx b/ts/state/smart/GroupV1MigrationDialog.tsx
index 27f4f28752..ef16871e7c 100644
--- a/ts/state/smart/GroupV1MigrationDialog.tsx
+++ b/ts/state/smart/GroupV1MigrationDialog.tsx
@@ -3,7 +3,7 @@
 
 import { connect } from 'react-redux';
 import { mapDispatchToProps } from '../actions';
-import type { PropsType as GroupV1MigrationDialogPropsType } from '../../components/GroupV1MigrationDialog';
+import type { DataPropsType as GroupV1MigrationDialogPropsType } from '../../components/GroupV1MigrationDialog';
 import { GroupV1MigrationDialog } from '../../components/GroupV1MigrationDialog';
 import type { ConversationType } from '../ducks/conversations';
 import type { StateType } from '../reducer';
diff --git a/ts/views/conversation_view.tsx b/ts/views/conversation_view.tsx
index c761b00eb5..90cca66b1d 100644
--- a/ts/views/conversation_view.tsx
+++ b/ts/views/conversation_view.tsx
@@ -16,21 +16,14 @@ import * as Errors from '../types/errors';
 import type { DraftBodyRangesType } from '../types/Util';
 import type { MIMEType } from '../types/MIME';
 import type { ConversationModel } from '../models/conversations';
-import type {
-  GroupV2PendingMemberType,
-  MessageAttributesType,
-} from '../model-types.d';
+import type { MessageAttributesType } from '../model-types.d';
 import type { MediaItemType, MediaItemMessageType } from '../types/MediaItem';
 import { getMessageById } from '../messages/getMessageById';
 import { getContactId } from '../messages/helpers';
 import { strictAssert } from '../util/assert';
 import { enqueueReactionForSend } from '../reactions/enqueueReactionForSend';
 import type { GroupNameCollisionsWithIdsByTitle } from '../util/groupMemberNameCollisions';
-import {
-  isDirectConversation,
-  isGroup,
-  isGroupV1,
-} from '../util/whatTypeOfConversation';
+import { isDirectConversation, isGroup } from '../util/whatTypeOfConversation';
 import { findAndFormatContact } from '../util/findAndFormatContact';
 import { getPreferredBadgeSelector } from '../state/selectors/badges';
 import {
@@ -195,7 +188,6 @@ export class ConversationView extends window.Backbone.View<ConversationModel> {
   private contactModalView?: Backbone.View;
   private conversationView?: Backbone.View;
   private lightboxView?: ReactWrapperView;
-  private migrationDialog?: Backbone.View;
   private stickerPreviewModalView?: Backbone.View;
 
   // Panel support
@@ -450,7 +442,6 @@ export class ConversationView extends window.Backbone.View<ConversationModel> {
       onTextTooLong: () => showToast(ToastMessageBodyTooLong),
       getQuotedMessage: () => this.model.get('quotedMessageId'),
       clearQuotedMessage: () => this.setQuoteMessage(undefined),
-      onStartGroupMigration: () => this.startMigrationToGV2(),
       onCancelJoinRequest: async () => {
         await window.showConfirmationDialog({
           dialogName: 'GroupV2CancelRequestToJoin',
@@ -686,62 +677,6 @@ export class ConversationView extends window.Backbone.View<ConversationModel> {
     this.model.loadAndScroll(messageId);
   }
 
-  async startMigrationToGV2(): Promise<void> {
-    const logId = this.model.idForLogging();
-
-    if (!isGroupV1(this.model.attributes)) {
-      throw new Error(
-        `startMigrationToGV2/${logId}: Cannot start, not a GroupV1 group`
-      );
-    }
-
-    const onClose = () => {
-      if (this.migrationDialog) {
-        this.migrationDialog.remove();
-        this.migrationDialog = undefined;
-      }
-    };
-    onClose();
-
-    const migrate = () => {
-      onClose();
-
-      longRunningTaskWrapper({
-        idForLogging: this.model.idForLogging(),
-        name: 'initiateMigrationToGroupV2',
-        task: () => window.Signal.Groups.initiateMigrationToGroupV2(this.model),
-      });
-    };
-
-    // Note: this call will throw if, after generating member lists, we are no longer a
-    //   member or are in the pending member list.
-    const { droppedGV2MemberIds, pendingMembersV2 } =
-      await longRunningTaskWrapper({
-        idForLogging: this.model.idForLogging(),
-        name: 'getGroupMigrationMembers',
-        task: () => window.Signal.Groups.getGroupMigrationMembers(this.model),
-      });
-
-    const invitedMemberIds = pendingMembersV2.map(
-      (item: GroupV2PendingMemberType) => item.uuid
-    );
-
-    this.migrationDialog = new ReactWrapperView({
-      className: 'group-v1-migration-wrapper',
-      JSX: window.Signal.State.Roots.createGroupV1MigrationModal(
-        window.reduxStore,
-        {
-          areWeInvited: false,
-          droppedMemberIds: droppedGV2MemberIds,
-          hasMigrated: false,
-          invitedMemberIds,
-          migrate,
-          onClose,
-        }
-      ),
-    });
-  }
-
   unload(reason: string): void {
     log.info(
       'unloading conversation',
diff --git a/ts/window.d.ts b/ts/window.d.ts
index c4a83e6984..19f96e2da5 100644
--- a/ts/window.d.ts
+++ b/ts/window.d.ts
@@ -40,7 +40,6 @@ import type { createApp } from './state/roots/createApp';
 import type { createChatColorPicker } from './state/roots/createChatColorPicker';
 import type { createConversationDetails } from './state/roots/createConversationDetails';
 import type { createGroupLinkManagement } from './state/roots/createGroupLinkManagement';
-import type { createGroupV1MigrationModal } from './state/roots/createGroupV1MigrationModal';
 import type { createGroupV2JoinModal } from './state/roots/createGroupV2JoinModal';
 import type { createGroupV2Permissions } from './state/roots/createGroupV2Permissions';
 import type { createMessageDetail } from './state/roots/createMessageDetail';
@@ -172,7 +171,6 @@ export type SignalCoreType = {
       createChatColorPicker: typeof createChatColorPicker;
       createConversationDetails: typeof createConversationDetails;
       createGroupLinkManagement: typeof createGroupLinkManagement;
-      createGroupV1MigrationModal: typeof createGroupV1MigrationModal;
       createGroupV2JoinModal: typeof createGroupV2JoinModal;
       createGroupV2Permissions: typeof createGroupV2Permissions;
       createMessageDetail: typeof createMessageDetail;