diff --git a/scripts/testNetworkForeignAssets.ts b/scripts/testNetworkForeignAssets.ts
index d8789c64..79667e1e 100644
--- a/scripts/testNetworkForeignAssets.ts
+++ b/scripts/testNetworkForeignAssets.ts
@@ -5,8 +5,8 @@ import { Keyring } from '@polkadot/keyring';
 import { cryptoWaitReady } from '@polkadot/util-crypto';
 import chalk from 'chalk';
 
-import { KUSAMA_ASSET_HUB_WS_URL, TRAPPIST_WS_URL } from './consts';
-import { awaitBlockProduction, delay, logWithDate } from './util';
+import { KUSAMA_ASSET_HUB_WS_URL, ROCOCO_ALICE_WS_URL, TRAPPIST_WS_URL } from './consts';
+import { awaitBlockProduction, awaitEpochChange, delay, logWithDate } from './util';
 
 const fAssetSetMetadataCall = (assetHubApi: ApiPromise): `0x${string}` => {
 	const trappistMultiLocation = {
@@ -58,7 +58,7 @@ const fAssetCreateCall = (assetHubApi: ApiPromise): `0x${string}` => {
 
 const sudoCallWrapper = (trappistApi: ApiPromise, call: `0x${string}`) => {
 	// Double encode the call
-	const xcmDoubleEncoded = trappistApi.createType('XcmDoubleEncoded', {
+	const xcmDoubleEncoded = trappistApi.createType('StagingXcmDoubleEncoded', {
 		encoded: call,
 	});
 
@@ -159,6 +159,10 @@ const setMetadataForeignAssetViaSudo = (assetHubApi: ApiPromise, trappistApi: Ap
 	return sudoCallWrapper(trappistApi, setMetadataCall);
 };
 
+const openHrmpChannels = (api: ApiPromise, sender: number, receiver: number) => {
+	return api.tx.hrmp.forceOpenHrmpChannel(sender, receiver, Number(8), Number(512));
+};
+
 const main = async () => {
 	logWithDate(chalk.yellow('Initializing script to create foreignAssets on chain'));
 	await cryptoWaitReady();
@@ -183,6 +187,27 @@ const main = async () => {
 	await trappistApi.isReady;
 	logWithDate(chalk.green('Created a connection to Trappist'));
 
+	const relayApi = await ApiPromise.create({
+		provider: new WsProvider(ROCOCO_ALICE_WS_URL),
+		noInitWarn: true,
+	});
+
+	await relayApi.isReady;
+
+	logWithDate(chalk.green('Created a connection to Rococo'));
+
+	logWithDate(chalk.blue('Opening HRMP Channels'));
+
+	const hrmpChannelCalls = [];
+
+	hrmpChannelCalls.push(openHrmpChannels(relayApi, Number(1000), Number(1836)));
+	hrmpChannelCalls.push(openHrmpChannels(relayApi, Number(1836), Number(1000)));
+
+	await relayApi.tx.sudo.sudo(relayApi.tx.utility.batchAll(hrmpChannelCalls)).signAndSend(alice);
+
+	await awaitEpochChange(relayApi);
+	logWithDate(chalk.magenta('HRMP channels open'));
+
 	logWithDate(chalk.magenta('Sending funds to Trappist Sibling on Kusama AssetHub'));
 
 	await kusamaAssetHubApi.tx.balances
diff --git a/scripts/testNetworkLiquidAssets.ts b/scripts/testNetworkLiquidAssets.ts
index 05d54ee4..bab1f2ff 100644
--- a/scripts/testNetworkLiquidAssets.ts
+++ b/scripts/testNetworkLiquidAssets.ts
@@ -6,8 +6,8 @@ import { KeyringPair } from '@polkadot/keyring/types';
 import { cryptoWaitReady } from '@polkadot/util-crypto';
 import chalk from 'chalk';
 
-import { KUSAMA_ASSET_HUB_WS_URL } from './consts';
-import { awaitBlockProduction, delay, logWithDate } from './util';
+import { KUSAMA_ASSET_HUB_WS_URL, ROCOCO_ALICE_WS_URL } from './consts';
+import { awaitBlockProduction, awaitEpochChange, delay, logWithDate } from './util';
 
 const ASSET_ID = 1;
 const ASSET_NAME = 'Testy';
@@ -57,6 +57,10 @@ const transferLPTokensCall = (api: ApiPromise, token: number, amount: number, to
 	return api.tx.poolAssets.transferKeepAlive(token, to.address, amount);
 };
 
+const openHrmpChannels = (api: ApiPromise, sender: number, receiver: number) => {
+	return api.tx.hrmp.forceOpenHrmpChannel(sender, receiver, Number(8), Number(512));
+};
+
 const main = async () => {
 	logWithDate(chalk.yellow('Initializing script to create a liquidity pool on Kusama Asset Hub'));
 	await cryptoWaitReady();
@@ -65,6 +69,25 @@ const main = async () => {
 	const alice = keyring.addFromUri('//Alice');
 	const bob = keyring.addFromUri('//Bob');
 
+	const relayApi = await ApiPromise.create({
+		provider: new WsProvider(ROCOCO_ALICE_WS_URL),
+		noInitWarn: true,
+	});
+
+	await relayApi.isReady;
+
+	logWithDate(chalk.blue('Opening HRMP Channels'));
+
+	const hrmpChannelCalls = [];
+
+	hrmpChannelCalls.push(openHrmpChannels(relayApi, Number(1000), Number(1836)));
+	hrmpChannelCalls.push(openHrmpChannels(relayApi, Number(1836), Number(1000)));
+
+	await relayApi.tx.sudo.sudo(relayApi.tx.utility.batchAll(hrmpChannelCalls)).signAndSend(alice);
+
+	await awaitEpochChange(relayApi);
+	logWithDate(chalk.magenta('HRMP channels open'));
+
 	const api = await ApiPromise.create({
 		provider: new WsProvider(KUSAMA_ASSET_HUB_WS_URL),
 		noInitWarn: true,
@@ -87,7 +110,7 @@ const main = async () => {
 	txs.push(createPool);
 	txs.push(addLiquidity);
 
-	await api.tx.utility.batch(txs).signAndSend(alice);
+	await api.tx.utility.batch(txs).signAndSend(alice, { nonce: -1 });
 
 	await delay(24000);
 
@@ -122,7 +145,7 @@ const main = async () => {
 
 	logWithDate(chalk.magenta('Sending 1,000,000,000,000 lpTokens from Alice to Bob on Kusama Asset Hub'));
 
-	await transferLPTokensCall(api, 0, 1000000000000, bob).signAndSend(alice);
+	await transferLPTokensCall(api, 0, 1000000000000, bob).signAndSend(alice, { nonce: -1 });
 
 	await delay(24000);
 
diff --git a/scripts/util.ts b/scripts/util.ts
index 0d3e3ad6..bbb0a980 100644
--- a/scripts/util.ts
+++ b/scripts/util.ts
@@ -57,3 +57,25 @@ export const awaitBlockProduction = async (wsUrl: string) => {
 		logWithDate(chalk.blue('Polkadot-js successfully disconnected'));
 	});
 };
+
+export const awaitEpochChange = async (api: ApiPromise) => {
+	const currentEpoch = await api.call.babeApi.currentEpoch();
+	const currentEpochIndex = currentEpoch.epochIndex;
+	let counter = 1;
+	let changedEpoch = false;
+	while (!changedEpoch) {
+		const { epochIndex } = await api.call.babeApi.currentEpoch();
+
+		if (epochIndex.toNumber() > currentEpochIndex.toNumber() + 1) {
+			changedEpoch = true;
+		}
+		await delay(1000);
+
+		counter += 1;
+		process.stdout.clearLine(0);
+		process.stdout.write(`\rWaiting for Epoch change${'.'.repeat((counter % 3) + 1)}`);
+	}
+
+	process.stdout.clearLine(0);
+	logWithDate(chalk.magenta('Epoch changed'), true);
+};
diff --git a/zombienet/medium-network.toml b/zombienet/medium-network.toml
index fe7552d2..c5cdc83f 100644
--- a/zombienet/medium-network.toml
+++ b/zombienet/medium-network.toml
@@ -64,15 +64,3 @@ chain = "trappist-local"
 number = "u64"
 parent_hash = "Hash"
 post_state = "Hash"
-
-[[hrmp_channels]]
-sender = 1000
-recipient = 1836
-max_capacity = 8
-max_message_size = 512
-
-[[hrmp_channels]]
-sender = 1836
-recipient = 1000
-max_capacity = 8
-max_message_size = 512