Migrate foreign assets v3::Location to v4::Location (#4129)

In the move from XCMv3 to XCMv4, the `AssetId` for `ForeignAssets` in
`asset-hub-rococo` and `asset-hub-westend` was left as `v3::Location` to
be later migrated to `v4::Location`.

This is that migration PR.

Because the encoding of `v3::Location` and `v4::Location` is the same,
we don't need to do any data migration, the keys will still be
decodable.
The [original idea by
Jan](paritytech/polkadot#7236) was to make the
v4 changes in v3 since the ABI (the encoding/decoding) didn't change.
Corroborated the ABI is the same iterating over all storage, the code is
on [another
branch](https://github.com/paritytech/polkadot-sdk/blob/cisco-assert-v3-v4-encodings-equal/cumulus/parachains/runtimes/assets/migrations/src/foreign_assets_to_v4/mod.rs).

We will need a data migration when we want to update from `v4::Location`
to `v5::Location` because of [the accepted RFC changing the NetworkId
enum](polkadot-fellows/RFCs#108).
I'll configure MBMs (Multi-Block Migrations) then and make the actual
migration.

Fixes #4128

---------

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: command-bot <>

cumulus/parachains/integration-tests/emulated/chains/parachains/assets/asset-hub-rococo/src/lib.rs

@@ -59,5 +59,5 @@ impl_accounts_helpers_for_parachain!(AssetHubRococo);
 impl_assert_events_helpers_for_parachain!(AssetHubRococo);
 impl_assets_helpers_for_system_parachain!(AssetHubRococo, Rococo);
 impl_assets_helpers_for_parachain!(AssetHubRococo);
-impl_foreign_assets_helpers_for_parachain!(AssetHubRococo, xcm::v3::Location);
+impl_foreign_assets_helpers_for_parachain!(AssetHubRococo, xcm::v4::Location);
 impl_xcm_helpers_for_parachain!(AssetHubRococo);

cumulus/parachains/integration-tests/emulated/chains/parachains/assets/asset-hub-westend/src/lib.rs

@@ -59,5 +59,5 @@ impl_accounts_helpers_for_parachain!(AssetHubWestend);
 impl_assert_events_helpers_for_parachain!(AssetHubWestend);
 impl_assets_helpers_for_system_parachain!(AssetHubWestend, Westend);
 impl_assets_helpers_for_parachain!(AssetHubWestend);
-impl_foreign_assets_helpers_for_parachain!(AssetHubWestend, xcm::v3::Location);
+impl_foreign_assets_helpers_for_parachain!(AssetHubWestend, xcm::v4::Location);
 impl_xcm_helpers_for_parachain!(AssetHubWestend);

cumulus/parachains/integration-tests/emulated/common/src/lib.rs

@@ -63,11 +63,11 @@ pub const PENPAL_ID: u32 = 2000;
 pub const ASSETS_PALLET_ID: u8 = 50;
 
 parameter_types! {
-	pub PenpalTeleportableAssetLocation: xcm::v3::Location
-		= xcm::v3::Location::new(1, [
-				xcm::v3::Junction::Parachain(PENPAL_ID),
-				xcm::v3::Junction::PalletInstance(ASSETS_PALLET_ID),
-				xcm::v3::Junction::GeneralIndex(TELEPORTABLE_ASSET_ID.into()),
+	pub PenpalTeleportableAssetLocation: xcm::v4::Location
+		= xcm::v4::Location::new(1, [
+				xcm::v4::Junction::Parachain(PENPAL_ID),
+				xcm::v4::Junction::PalletInstance(ASSETS_PALLET_ID),
+				xcm::v4::Junction::GeneralIndex(TELEPORTABLE_ASSET_ID.into()),
 			]
 		);
 	pub PenpalSiblingSovereignAccount: AccountId = Sibling::from(PENPAL_ID).into_account_truncating();

cumulus/parachains/integration-tests/emulated/tests/assets/asset-hub-rococo/src/tests/send.rs

@@ -36,21 +36,18 @@ fn send_xcm_from_para_to_system_para_paying_fee_with_system_assets_works() {
 	let para_sovereign_account = AssetHubRococo::sovereign_account_id_of(
 		AssetHubRococo::sibling_location_of(PenpalA::para_id()),
 	);
-	let asset_location_on_penpal = v3::Location::new(
+	let asset_location_on_penpal = Location::new(
 		0,
-		[
-			v3::Junction::PalletInstance(ASSETS_PALLET_ID),
-			v3::Junction::GeneralIndex(ASSET_ID.into()),
-		],
+		[Junction::PalletInstance(ASSETS_PALLET_ID), Junction::GeneralIndex(ASSET_ID.into())],
 	);
 	let foreign_asset_at_asset_hub =
-		v3::Location::new(1, [v3::Junction::Parachain(PenpalA::para_id().into())])
+		Location::new(1, [Junction::Parachain(PenpalA::para_id().into())])
 			.appended_with(asset_location_on_penpal)
 			.unwrap();
 
 	// Encoded `create_asset` call to be executed in AssetHub
 	let call = AssetHubRococo::create_foreign_asset_call(
-		foreign_asset_at_asset_hub,
+		foreign_asset_at_asset_hub.clone(),
 		ASSET_MIN_BALANCE,
 		para_sovereign_account.clone(),
 	);

cumulus/parachains/integration-tests/emulated/tests/assets/asset-hub-rococo/src/tests/swap.rs

@@ -17,13 +17,10 @@ use crate::imports::*;
 
 #[test]
 fn swap_locally_on_chain_using_local_assets() {
-	let asset_native = Box::new(v3::Location::try_from(RelayLocation::get()).unwrap());
-	let asset_one = Box::new(v3::Location::new(
+	let asset_native = Box::new(Location::try_from(RelayLocation::get()).unwrap());
+	let asset_one = Box::new(Location::new(
 		0,
-		[
-			v3::Junction::PalletInstance(ASSETS_PALLET_ID),
-			v3::Junction::GeneralIndex(ASSET_ID.into()),
-		],
+		[Junction::PalletInstance(ASSETS_PALLET_ID), Junction::GeneralIndex(ASSET_ID.into())],
 	));
 
 	AssetHubRococo::execute_with(|| {
@@ -112,11 +109,11 @@ fn swap_locally_on_chain_using_local_assets() {
 
 #[test]
 fn swap_locally_on_chain_using_foreign_assets() {
-	let asset_native = Box::new(v3::Location::try_from(RelayLocation::get()).unwrap());
+	let asset_native = Box::new(Location::try_from(RelayLocation::get()).unwrap());
 	let asset_location_on_penpal =
-		v3::Location::try_from(PenpalLocalTeleportableToAssetHub::get()).unwrap();
+		Location::try_from(PenpalLocalTeleportableToAssetHub::get()).unwrap();
 	let foreign_asset_at_asset_hub_rococo =
-		v3::Location::new(1, [v3::Junction::Parachain(PenpalA::para_id().into())])
+		Location::new(1, [Junction::Parachain(PenpalA::para_id().into())])
 			.appended_with(asset_location_on_penpal)
 			.unwrap();
 
@@ -141,7 +138,7 @@ fn swap_locally_on_chain_using_foreign_assets() {
 		// 1. Mint foreign asset (in reality this should be a teleport or some such)
 		assert_ok!(<AssetHubRococo as AssetHubRococoPallet>::ForeignAssets::mint(
 			<AssetHubRococo as Chain>::RuntimeOrigin::signed(sov_penpal_on_ahr.clone().into()),
-			foreign_asset_at_asset_hub_rococo,
+			foreign_asset_at_asset_hub_rococo.clone(),
 			sov_penpal_on_ahr.clone().into(),
 			ASSET_HUB_ROCOCO_ED * 3_000_000_000_000,
 		));
@@ -157,7 +154,7 @@ fn swap_locally_on_chain_using_foreign_assets() {
 		assert_ok!(<AssetHubRococo as AssetHubRococoPallet>::AssetConversion::create_pool(
 			<AssetHubRococo as Chain>::RuntimeOrigin::signed(AssetHubRococoSender::get()),
 			asset_native.clone(),
-			Box::new(foreign_asset_at_asset_hub_rococo),
+			Box::new(foreign_asset_at_asset_hub_rococo.clone()),
 		));
 
 		assert_expected_events!(
@@ -171,7 +168,7 @@ fn swap_locally_on_chain_using_foreign_assets() {
 		assert_ok!(<AssetHubRococo as AssetHubRococoPallet>::AssetConversion::add_liquidity(
 			<AssetHubRococo as Chain>::RuntimeOrigin::signed(sov_penpal_on_ahr.clone()),
 			asset_native.clone(),
-			Box::new(foreign_asset_at_asset_hub_rococo),
+			Box::new(foreign_asset_at_asset_hub_rococo.clone()),
 			1_000_000_000_000,
 			2_000_000_000_000,
 			0,
@@ -189,7 +186,7 @@ fn swap_locally_on_chain_using_foreign_assets() {
 		);
 
 		// 4. Swap!
-		let path = vec![asset_native.clone(), Box::new(foreign_asset_at_asset_hub_rococo)];
+		let path = vec![asset_native.clone(), Box::new(foreign_asset_at_asset_hub_rococo.clone())];
 
 		assert_ok!(
 			<AssetHubRococo as AssetHubRococoPallet>::AssetConversion::swap_exact_tokens_for_tokens(
@@ -216,7 +213,7 @@ fn swap_locally_on_chain_using_foreign_assets() {
 		assert_ok!(<AssetHubRococo as AssetHubRococoPallet>::AssetConversion::remove_liquidity(
 			<AssetHubRococo as Chain>::RuntimeOrigin::signed(sov_penpal_on_ahr.clone()),
 			asset_native.clone(),
-			Box::new(foreign_asset_at_asset_hub_rococo),
+			Box::new(foreign_asset_at_asset_hub_rococo.clone()),
 			1414213562273 - ASSET_HUB_ROCOCO_ED * 2, // all but the 2 EDs can't be retrieved.
 			0,
 			0,
@@ -252,8 +249,8 @@ fn cannot_create_pool_from_pool_assets() {
 		assert_matches::assert_matches!(
 			<AssetHubRococo as AssetHubRococoPallet>::AssetConversion::create_pool(
 				<AssetHubRococo as Chain>::RuntimeOrigin::signed(AssetHubRococoSender::get()),
-				Box::new(v3::Location::try_from(asset_native).unwrap()),
-				Box::new(v3::Location::try_from(asset_one).unwrap()),
+				Box::new(Location::try_from(asset_native).unwrap()),
+				Box::new(Location::try_from(asset_one).unwrap()),
 			),
 			Err(DispatchError::Module(ModuleError{index: _, error: _, message})) => assert_eq!(message, Some("Unknown"))
 		);
@@ -262,12 +259,12 @@ fn cannot_create_pool_from_pool_assets() {
 
 #[test]
 fn pay_xcm_fee_with_some_asset_swapped_for_native() {
-	let asset_native = v3::Location::try_from(RelayLocation::get()).unwrap();
-	let asset_one = xcm::v3::Location {
+	let asset_native = Location::try_from(RelayLocation::get()).unwrap();
+	let asset_one = Location {
 		parents: 0,
 		interior: [
-			xcm::v3::Junction::PalletInstance(ASSETS_PALLET_ID),
-			xcm::v3::Junction::GeneralIndex(ASSET_ID.into()),
+			Junction::PalletInstance(ASSETS_PALLET_ID),
+			Junction::GeneralIndex(ASSET_ID.into()),
 		]
 		.into(),
 	};
@@ -296,8 +293,8 @@ fn pay_xcm_fee_with_some_asset_swapped_for_native() {
 
 		assert_ok!(<AssetHubRococo as AssetHubRococoPallet>::AssetConversion::create_pool(
 			<AssetHubRococo as Chain>::RuntimeOrigin::signed(AssetHubRococoSender::get()),
-			Box::new(asset_native),
-			Box::new(asset_one),
+			Box::new(asset_native.clone()),
+			Box::new(asset_one.clone()),
 		));
 
 		assert_expected_events!(

cumulus/parachains/integration-tests/emulated/tests/assets/asset-hub-rococo/src/tests/teleport.rs

@@ -141,7 +141,6 @@ fn penpal_to_ah_foreign_assets_receiver_assertions(t: ParaToSystemParaTest) {
 	);
 	let (expected_foreign_asset_id, expected_foreign_asset_amount) =
 		non_fee_asset(&t.args.assets, t.args.fee_asset_item as usize).unwrap();
-	let expected_foreign_asset_id_v3: v3::Location = expected_foreign_asset_id.try_into().unwrap();
 
 	AssetHubRococo::assert_xcmp_queue_success(None);
 
@@ -159,7 +158,7 @@ fn penpal_to_ah_foreign_assets_receiver_assertions(t: ParaToSystemParaTest) {
 				who: *who == t.receiver.account_id,
 			},
 			RuntimeEvent::ForeignAssets(pallet_assets::Event::Issued { asset_id, owner, amount }) => {
-				asset_id: *asset_id == expected_foreign_asset_id_v3,
+				asset_id: *asset_id == expected_foreign_asset_id,
 				owner: *owner == t.receiver.account_id,
 				amount: *amount == expected_foreign_asset_amount,
 			},
@@ -173,7 +172,6 @@ fn ah_to_penpal_foreign_assets_sender_assertions(t: SystemParaToParaTest) {
 	AssetHubRococo::assert_xcm_pallet_attempted_complete(None);
 	let (expected_foreign_asset_id, expected_foreign_asset_amount) =
 		non_fee_asset(&t.args.assets, t.args.fee_asset_item as usize).unwrap();
-	let expected_foreign_asset_id_v3: v3::Location = expected_foreign_asset_id.try_into().unwrap();
 	assert_expected_events!(
 		AssetHubRococo,
 		vec![
@@ -189,7 +187,7 @@ fn ah_to_penpal_foreign_assets_sender_assertions(t: SystemParaToParaTest) {
 			},
 			// foreign asset is burned locally as part of teleportation
 			RuntimeEvent::ForeignAssets(pallet_assets::Event::Burned { asset_id, owner, balance }) => {
-				asset_id: *asset_id == expected_foreign_asset_id_v3,
+				asset_id: *asset_id == expected_foreign_asset_id,
 				owner: *owner == t.sender.account_id,
 				balance: *balance == expected_foreign_asset_amount,
 			},

cumulus/parachains/integration-tests/emulated/tests/assets/asset-hub-westend/src/lib.rs

@@ -26,10 +26,7 @@ mod imports {
 	};
 
 	// Polkadot
-	pub use xcm::{
-		prelude::{AccountId32 as AccountId32Junction, *},
-		v3,
-	};
+	pub use xcm::prelude::{AccountId32 as AccountId32Junction, *};
 	pub use xcm_executor::traits::TransferType;
 
 	// Cumulus

cumulus/parachains/integration-tests/emulated/tests/assets/asset-hub-westend/src/tests/send.rs

@@ -36,21 +36,18 @@ fn send_xcm_from_para_to_system_para_paying_fee_with_system_assets_works() {
 	let para_sovereign_account = AssetHubWestend::sovereign_account_id_of(
 		AssetHubWestend::sibling_location_of(PenpalA::para_id()),
 	);
-	let asset_location_on_penpal = v3::Location::new(
+	let asset_location_on_penpal = Location::new(
 		0,
-		[
-			v3::Junction::PalletInstance(ASSETS_PALLET_ID),
-			v3::Junction::GeneralIndex(ASSET_ID.into()),
-		],
+		[Junction::PalletInstance(ASSETS_PALLET_ID), Junction::GeneralIndex(ASSET_ID.into())],
 	);
 	let foreign_asset_at_asset_hub =
-		v3::Location::new(1, [v3::Junction::Parachain(PenpalA::para_id().into())])
+		Location::new(1, [Junction::Parachain(PenpalA::para_id().into())])
 			.appended_with(asset_location_on_penpal)
 			.unwrap();
 
 	// Encoded `create_asset` call to be executed in AssetHub
 	let call = AssetHubWestend::create_foreign_asset_call(
-		foreign_asset_at_asset_hub,
+		foreign_asset_at_asset_hub.clone(),
 		ASSET_MIN_BALANCE,
 		para_sovereign_account.clone(),
 	);

cumulus/parachains/integration-tests/emulated/tests/assets/asset-hub-westend/src/tests/swap.rs

@@ -18,12 +18,12 @@ use crate::imports::*;
 #[test]
 fn swap_locally_on_chain_using_local_assets() {
 	let asset_native =
-		Box::new(v3::Location::try_from(RelayLocation::get()).expect("conversion works"));
-	let asset_one = Box::new(v3::Location {
+		Box::new(Location::try_from(RelayLocation::get()).expect("conversion works"));
+	let asset_one = Box::new(Location {
 		parents: 0,
 		interior: [
-			v3::Junction::PalletInstance(ASSETS_PALLET_ID),
-			v3::Junction::GeneralIndex(ASSET_ID.into()),
+			Junction::PalletInstance(ASSETS_PALLET_ID),
+			Junction::GeneralIndex(ASSET_ID.into()),
 		]
 		.into(),
 	});
@@ -112,11 +112,11 @@ fn swap_locally_on_chain_using_local_assets() {
 
 #[test]
 fn swap_locally_on_chain_using_foreign_assets() {
-	let asset_native = Box::new(v3::Location::try_from(RelayLocation::get()).unwrap());
+	let asset_native = Box::new(Location::try_from(RelayLocation::get()).unwrap());
 	let asset_location_on_penpal =
-		v3::Location::try_from(PenpalLocalTeleportableToAssetHub::get()).expect("conversion_works");
+		Location::try_from(PenpalLocalTeleportableToAssetHub::get()).expect("conversion_works");
 	let foreign_asset_at_asset_hub_westend =
-		v3::Location::new(1, [v3::Junction::Parachain(PenpalA::para_id().into())])
+		Location::new(1, [Junction::Parachain(PenpalA::para_id().into())])
 			.appended_with(asset_location_on_penpal)
 			.unwrap();
 
@@ -141,7 +141,7 @@ fn swap_locally_on_chain_using_foreign_assets() {
 		// 1. Mint foreign asset (in reality this should be a teleport or some such)
 		assert_ok!(<AssetHubWestend as AssetHubWestendPallet>::ForeignAssets::mint(
 			<AssetHubWestend as Chain>::RuntimeOrigin::signed(sov_penpal_on_ahr.clone().into()),
-			foreign_asset_at_asset_hub_westend,
+			foreign_asset_at_asset_hub_westend.clone(),
 			sov_penpal_on_ahr.clone().into(),
 			ASSET_HUB_WESTEND_ED * 3_000_000_000_000,
 		));
@@ -157,7 +157,7 @@ fn swap_locally_on_chain_using_foreign_assets() {
 		assert_ok!(<AssetHubWestend as AssetHubWestendPallet>::AssetConversion::create_pool(
 			<AssetHubWestend as Chain>::RuntimeOrigin::signed(AssetHubWestendSender::get()),
 			asset_native.clone(),
-			Box::new(foreign_asset_at_asset_hub_westend),
+			Box::new(foreign_asset_at_asset_hub_westend.clone()),
 		));
 
 		assert_expected_events!(
@@ -171,7 +171,7 @@ fn swap_locally_on_chain_using_foreign_assets() {
 		assert_ok!(<AssetHubWestend as AssetHubWestendPallet>::AssetConversion::add_liquidity(
 			<AssetHubWestend as Chain>::RuntimeOrigin::signed(sov_penpal_on_ahr.clone()),
 			asset_native.clone(),
-			Box::new(foreign_asset_at_asset_hub_westend),
+			Box::new(foreign_asset_at_asset_hub_westend.clone()),
 			1_000_000_000_000_000,
 			2_000_000_000_000_000,
 			0,
@@ -189,7 +189,7 @@ fn swap_locally_on_chain_using_foreign_assets() {
 		);
 
 		// 4. Swap!
-		let path = vec![asset_native.clone(), Box::new(foreign_asset_at_asset_hub_westend)];
+		let path = vec![asset_native.clone(), Box::new(foreign_asset_at_asset_hub_westend.clone())];
 
 		assert_ok!(
 			<AssetHubWestend as AssetHubWestendPallet>::AssetConversion::swap_exact_tokens_for_tokens(
@@ -252,8 +252,8 @@ fn cannot_create_pool_from_pool_assets() {
 		assert_matches::assert_matches!(
 			<AssetHubWestend as AssetHubWestendPallet>::AssetConversion::create_pool(
 				<AssetHubWestend as Chain>::RuntimeOrigin::signed(AssetHubWestendSender::get()),
-				Box::new(v3::Location::try_from(asset_native).expect("conversion works")),
-				Box::new(v3::Location::try_from(asset_one).expect("conversion works")),
+				Box::new(Location::try_from(asset_native).expect("conversion works")),
+				Box::new(Location::try_from(asset_one).expect("conversion works")),
 			),
 			Err(DispatchError::Module(ModuleError{index: _, error: _, message})) => assert_eq!(message, Some("Unknown"))
 		);
@@ -262,12 +262,12 @@ fn cannot_create_pool_from_pool_assets() {
 
 #[test]
 fn pay_xcm_fee_with_some_asset_swapped_for_native() {
-	let asset_native = v3::Location::try_from(RelayLocation::get()).expect("conversion works");
-	let asset_one = xcm::v3::Location {
+	let asset_native = Location::try_from(RelayLocation::get()).expect("conversion works");
+	let asset_one = Location {
 		parents: 0,
 		interior: [
-			xcm::v3::Junction::PalletInstance(ASSETS_PALLET_ID),
-			xcm::v3::Junction::GeneralIndex(ASSET_ID.into()),
+			Junction::PalletInstance(ASSETS_PALLET_ID),
+			Junction::GeneralIndex(ASSET_ID.into()),
 		]
 		.into(),
 	};
@@ -296,8 +296,8 @@ fn pay_xcm_fee_with_some_asset_swapped_for_native() {
 
 		assert_ok!(<AssetHubWestend as AssetHubWestendPallet>::AssetConversion::create_pool(
 			<AssetHubWestend as Chain>::RuntimeOrigin::signed(AssetHubWestendSender::get()),
-			Box::new(asset_native),
-			Box::new(asset_one),
+			Box::new(asset_native.clone()),
+			Box::new(asset_one.clone()),
 		));
 
 		assert_expected_events!(

cumulus/parachains/integration-tests/emulated/tests/assets/asset-hub-westend/src/tests/teleport.rs

@@ -141,7 +141,6 @@ fn penpal_to_ah_foreign_assets_receiver_assertions(t: ParaToSystemParaTest) {
 	);
 	let (expected_foreign_asset_id, expected_foreign_asset_amount) =
 		non_fee_asset(&t.args.assets, t.args.fee_asset_item as usize).unwrap();
-	let expected_foreign_asset_id_v3: v3::Location = expected_foreign_asset_id.try_into().unwrap();
 
 	AssetHubWestend::assert_xcmp_queue_success(None);
 
@@ -159,7 +158,7 @@ fn penpal_to_ah_foreign_assets_receiver_assertions(t: ParaToSystemParaTest) {
 				who: *who == t.receiver.account_id,
 			},
 			RuntimeEvent::ForeignAssets(pallet_assets::Event::Issued { asset_id, owner, amount }) => {
-				asset_id: *asset_id == expected_foreign_asset_id_v3,
+				asset_id: *asset_id == expected_foreign_asset_id,
 				owner: *owner == t.receiver.account_id,
 				amount: *amount == expected_foreign_asset_amount,
 			},
@@ -173,7 +172,6 @@ fn ah_to_penpal_foreign_assets_sender_assertions(t: SystemParaToParaTest) {
 	AssetHubWestend::assert_xcm_pallet_attempted_complete(None);
 	let (expected_foreign_asset_id, expected_foreign_asset_amount) =
 		non_fee_asset(&t.args.assets, t.args.fee_asset_item as usize).unwrap();
-	let expected_foreign_asset_id_v3: v3::Location = expected_foreign_asset_id.try_into().unwrap();
 	assert_expected_events!(
 		AssetHubWestend,
 		vec![
@@ -189,7 +187,7 @@ fn ah_to_penpal_foreign_assets_sender_assertions(t: SystemParaToParaTest) {
 			},
 			// foreign asset is burned locally as part of teleportation
 			RuntimeEvent::ForeignAssets(pallet_assets::Event::Burned { asset_id, owner, balance }) => {
-				asset_id: *asset_id == expected_foreign_asset_id_v3,
+				asset_id: *asset_id == expected_foreign_asset_id,
 				owner: *owner == t.sender.account_id,
 				balance: *balance == expected_foreign_asset_amount,
 			},

cumulus/parachains/integration-tests/emulated/tests/bridges/bridge-hub-rococo/src/lib.rs

@@ -23,7 +23,8 @@ mod imports {
 	pub use xcm::{
 		latest::ParentThen,
 		prelude::{AccountId32 as AccountId32Junction, *},
-		v3::{self, NetworkId::Westend as WestendId},
+		v4,
+		v4::NetworkId::Westend as WestendId,
 	};
 	pub use xcm_executor::traits::TransferType;