diff --git a/packages/backend/src/core/AccountMoveService.ts b/packages/backend/src/core/AccountMoveService.ts
index 78d12ae705..5f63d30089 100644
--- a/packages/backend/src/core/AccountMoveService.ts
+++ b/packages/backend/src/core/AccountMoveService.ts
@@ -5,8 +5,8 @@ import { bindThis } from '@/decorators.js';
 import { DI } from '@/di-symbols.js';
 import type { Config } from '@/config.js';
 import type { LocalUser } from '@/models/entities/User.js';
-import type { BlockingsRepository, FollowingsRepository, Muting, MutingsRepository, UsersRepository } from '@/models/index.js';
-import type { RelationshipJobData } from '@/queue/types.js';
+import type { BlockingsRepository, FollowingsRepository, Muting, MutingsRepository, UserListJoiningsRepository, UsersRepository } from '@/models/index.js';
+import type { RelationshipJobData, ThinUser } from '@/queue/types.js';
 
 import { User } from '@/models/entities/User.js';
 
@@ -20,6 +20,7 @@ import { ApRendererService } from '@/core/activitypub/ApRendererService.js';
 import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { IdService } from '@/core/IdService.js';
 import { CacheService } from '@/core/CacheService';
+import { ProxyAccountService } from '@/core/ProxyAccountService.js';
 
 @Injectable()
 export class AccountMoveService {
@@ -39,6 +40,9 @@ export class AccountMoveService {
 		@Inject(DI.mutingsRepository)
 		private mutingsRepository: MutingsRepository,
 
+		@Inject(DI.userListJoiningsRepository)
+		private userListJoiningsRepository: UserListJoiningsRepository,
+
 		private idService: IdService,
 		private userEntityService: UserEntityService,
 		private apRendererService: ApRendererService,
@@ -46,6 +50,7 @@ export class AccountMoveService {
 		private globalEventService: GlobalEventService,
 		private userFollowingService: UserFollowingService,
 		private accountUpdateService: AccountUpdateService,
+		private proxyAccountService: ProxyAccountService,
 		private relayService: RelayService,
 		private cacheService: CacheService,
 		private queueService: QueueService,
@@ -114,43 +119,13 @@ export class AccountMoveService {
 	@bindThis
 	public async move(src: User, dst: User): Promise<void> {
 		// Copy blockings:
-		// Followers shouldn't overlap with blockers, but the destination account, different from the blockee (i.e., old account), may have followed the local user before moving.
-		// So block the destination account here.
-		const blockings = await this.blockingsRepository.find({
-			relations: {
-				blocker: true
-			},
-			where: {
-				blockeeId: src.id
-			}
-		})
-		// reblock the destination account
-		const blockJobs: RelationshipJobData[] = [];
-		for (const blocking of blockings) {
-			if (!blocking.blocker) continue;
-			blockJobs.push({ from: blocking.blocker, to: dst });
-		}
-		// no need to unblock the old account because it may be still functional
-		this.queueService.createBlockJob(blockJobs);
+		await this.copyBlocking(src, dst);
 
 		// Copy mutings:
-		// Insert new mutings with the same values except mutee
-		const mutings = await this.mutingsRepository.findBy({ muteeId: src.id });
-		const newMuting: Partial<Muting>[] = [];
-		for (const muting of mutings) {
-			newMuting.push({
-				id: this.idService.genId(),
-				createdAt: new Date(),
-				expiresAt: muting.expiresAt,
-				muterId: muting.muterId,
-				muteeId: dst.id,
-			})
-		}
-		this.mutingsRepository.insert(mutings); // no need to wait
-		for (const mute of mutings) {
-			if (mute.muter) this.cacheService.userMutingsCache.refresh(mute.muter.id);
-		}
-		// no need to unmute the old account because it may be still functional
+		await this.copyMutings(src, dst);
+
+		// Update lists:
+		await this.updateLists(src, dst);
 
 		// follow the new account and unfollow the old one
 		const followings = await this.followingsRepository.find({
@@ -166,8 +141,8 @@ export class AccountMoveService {
 		const unfollowJobs: RelationshipJobData[] = [];
 		for (const following of followings) {
 			if (!following.follower) continue;
-			followJobs.push({ from: following.follower, to: dst });
-			unfollowJobs.push({ from: following.follower, to: src });
+			followJobs.push({ from: { id: following.follower.id }, to: { id: dst.id } });
+			unfollowJobs.push({ from: { id: following.follower.id }, to: { id: src.id } });
 		}
 		// Should be queued because this can cause a number of follow/unfollow per one move.
 		// No need to care job orders as there should be no overlaps of follow/unfollow target.
@@ -175,6 +150,69 @@ export class AccountMoveService {
 		this.queueService.createUnfollowJob(unfollowJobs);
 	}
 
+	@bindThis
+	public async copyBlocking(src: ThinUser, dst: ThinUser): Promise<void> {
+		// Followers shouldn't overlap with blockers, but the destination account, different from the blockee (i.e., old account), may have followed the local user before moving.
+		// So block the destination account here.
+		const blockings = await this.blockingsRepository.find({ // FIXME: might be expensive
+			relations: {
+				blocker: true
+			},
+			where: {
+				blockeeId: src.id
+			}
+		});
+		// reblock the destination account
+		const blockJobs: RelationshipJobData[] = [];
+		for (const blocking of blockings) {
+			if (!blocking.blocker) continue;
+			blockJobs.push({ from: { id: blocking.blocker.id }, to: { id: dst.id } });
+		}
+		// no need to unblock the old account because it may be still functional
+		this.queueService.createBlockJob(blockJobs);
+	}
+
+	@bindThis
+	public async copyMutings(src: ThinUser, dst: ThinUser): Promise<void> {
+		// Insert new mutings with the same values except mutee
+		const mutings = await this.mutingsRepository.findBy({ muteeId: src.id });
+		const newMuting: Partial<Muting>[] = [];
+		for (const muting of mutings) {
+			newMuting.push({
+				id: this.idService.genId(),
+				createdAt: new Date(),
+				expiresAt: muting.expiresAt,
+				muterId: muting.muterId,
+				muteeId: dst.id,
+			});
+		}
+		this.mutingsRepository.insert(mutings); // no need to wait
+		for (const mute of mutings) {
+			if (mute.muter) this.cacheService.userMutingsCache.refresh(mute.muter.id);
+		}
+		// no need to unmute the old account because it may be still functional
+	}
+
+	@bindThis
+	public async updateLists(src: ThinUser, dst: User): Promise<void> {
+		// Return if there is no list to be updated
+		const numOfLists = await this.userListJoiningsRepository.countBy({ userId: src.id });
+		if (numOfLists === 0) return;
+
+		await this.userListJoiningsRepository.update(
+			{ userId: src.id },
+			{ userId: dst.id, user: dst }
+		);
+
+		// Have the proxy account follow the new account in the same way as UserListService.push
+		if (this.userEntityService.isRemoteUser(dst)) {
+			const proxy = await this.proxyAccountService.fetch();
+			if (proxy) {
+				this.queueService.createFollowJob([{ from: { id: proxy.id }, to: { id: dst.id } }]);
+			}
+		}
+	}
+
 	@bindThis
 	public getUserUri(user: User): string {
 			return this.userEntityService.isRemoteUser(user)
diff --git a/packages/backend/src/core/activitypub/ApInboxService.ts b/packages/backend/src/core/activitypub/ApInboxService.ts
index 982487e5f5..cf8172c9fc 100644
--- a/packages/backend/src/core/activitypub/ApInboxService.ts
+++ b/packages/backend/src/core/activitypub/ApInboxService.ts
@@ -747,11 +747,11 @@ export class ApInboxService {
 
 		// update them if they're remote
 		if (newAccount.uri) {
- 			await this.apPersonService.updatePerson(newAccount.uri);
+			await this.apPersonService.updatePerson(newAccount.uri);
 			newAccount = await this.apPersonService.resolvePerson(newAccount.uri);
 		}
 		if (oldAccount.uri) {
- 			await this.apPersonService.updatePerson(oldAccount.uri);
+			await this.apPersonService.updatePerson(oldAccount.uri);
 			oldAccount = await this.apPersonService.resolvePerson(oldAccount.uri);
 		}
 
diff --git a/packages/backend/src/core/activitypub/models/ApPersonService.ts b/packages/backend/src/core/activitypub/models/ApPersonService.ts
index 21797cfcb7..2a5d380356 100644
--- a/packages/backend/src/core/activitypub/models/ApPersonService.ts
+++ b/packages/backend/src/core/activitypub/models/ApPersonService.ts
@@ -3,7 +3,7 @@ import promiseLimit from 'promise-limit';
 import { DataSource } from 'typeorm';
 import { ModuleRef } from '@nestjs/core';
 import { DI } from '@/di-symbols.js';
-import type { FollowingsRepository, InstancesRepository, UserProfilesRepository, UserPublickeysRepository, UsersRepository } from '@/models/index.js';
+import type { BlockingsRepository, MutingsRepository, FollowingsRepository, InstancesRepository, UserProfilesRepository, UserPublickeysRepository, UsersRepository } from '@/models/index.js';
 import type { Config } from '@/config.js';
 import type { RemoteUser } from '@/models/entities/User.js';
 import { User } from '@/models/entities/User.js';
@@ -42,6 +42,7 @@ import type { ApLoggerService } from '../ApLoggerService.js';
 // eslint-disable-next-line @typescript-eslint/consistent-type-imports
 import type { ApImageService } from './ApImageService.js';
 import type { IActor, IObject } from '../type.js';
+import type { AccountMoveService } from '@/core/AccountMoveService.js';
 
 const nameLength = 128;
 const summaryLength = 2048;
@@ -66,6 +67,7 @@ export class ApPersonService implements OnModuleInit {
 	private usersChart: UsersChart;
 	private instanceChart: InstanceChart;
 	private apLoggerService: ApLoggerService;
+	private accountMoveService: AccountMoveService;
 	private logger: Logger;
 
 	constructor(
@@ -131,6 +133,7 @@ export class ApPersonService implements OnModuleInit {
 		this.usersChart = this.moduleRef.get('UsersChart');
 		this.instanceChart = this.moduleRef.get('InstanceChart');
 		this.apLoggerService = this.moduleRef.get('ApLoggerService');
+		this.accountMoveService = this.moduleRef.get('AccountMoveService');
 		this.logger = this.apLoggerService.logger;
 	}
 
@@ -413,14 +416,14 @@ export class ApPersonService implements OnModuleInit {
 		if (typeof uri !== 'string') throw new Error('uri is not string');
 
 		// URIがこのサーバーを指しているならスキップ
-		if (uri.startsWith(this.config.url + '/')) {
+		if (uri.startsWith(`${this.config.url}/`)) {
 			return;
 		}
 
 		//#region このサーバーに既に登録されているか
-		const exist = await this.usersRepository.findOneBy({ uri }) as RemoteUser;
+		const exist = await this.usersRepository.findOneBy({ uri }) as RemoteUser | null;
 
-		if (exist == null) {
+		if (exist === null) {
 			return;
 		}
 		//#endregion
@@ -523,6 +526,20 @@ export class ApPersonService implements OnModuleInit {
 		});
 
 		await this.updateFeatured(exist.id, resolver).catch(err => this.logger.error(err));
+
+		// Copy blocking and muting if we know its moving for the first time.
+		if (!exist.movedToUri && updates.movedToUri) {
+			try {
+				const newAccount = await this.resolvePerson(updates.movedToUri);
+				// Aggressively block and/or mute the new account:
+				// This does NOT check alsoKnownAs, assuming that other implmenetations properly check alsoKnownAs when firing account migration
+				await this.accountMoveService.copyBlocking(exist, newAccount);
+				await this.accountMoveService.copyMutings(exist, newAccount);
+				await this.accountMoveService.updateLists(exist, newAccount);
+			} catch {
+				/* skip if any error happens */
+			}
+		}
 	}
 
 	/**
diff --git a/packages/backend/src/server/api/endpoints/i/move.ts b/packages/backend/src/server/api/endpoints/i/move.ts
index 53195d9c63..c1aa0f4ccb 100644
--- a/packages/backend/src/server/api/endpoints/i/move.ts
+++ b/packages/backend/src/server/api/endpoints/i/move.ts
@@ -109,7 +109,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw new ApiError(meta.errors.noSuchMoveTarget);
 			});
 			const destination = await this.getterService.getUser(moveTo.id);
-			moveTo.uri = this.accountMoveService.getUserUri(destination)
+			moveTo.uri = this.accountMoveService.getUserUri(destination);
 
 			// update local db
 			await this.apPersonService.updatePerson(moveTo.uri);