diff --git a/itest/lnd_amp_test.go b/itest/lnd_amp_test.go
index 61b6d194a..a96911319 100644
--- a/itest/lnd_amp_test.go
+++ b/itest/lnd_amp_test.go
@@ -89,7 +89,14 @@ func testSendPaymentAMPInvoiceCase(ht *lntest.HarnessTest,
 	// Increase Dave's fee to make the test deterministic. Otherwise it
 	// would be unpredictable whether pathfinding would go through Charlie
 	// or Dave for the first shard.
-	expectedPolicy := mts.updateDaveGlobalPolicy()
+	expectedPolicy := &lnrpc.RoutingPolicy{
+		FeeBaseMsat:      500_000,
+		FeeRateMilliMsat: int64(0.001 * 1_000_000),
+		TimeLockDelta:    40,
+		MinHtlc:          1000, // default value
+		MaxHtlcMsat:      133_650_000,
+	}
+	mts.dave.UpdateGlobalPolicy(expectedPolicy)
 
 	// Make sure Alice has heard it for both Dave's channels.
 	ht.AssertChannelPolicyUpdate(
@@ -382,10 +389,17 @@ func testSendPaymentAMP(ht *lntest.HarnessTest) {
 	mts.openChannels(mppReq)
 	chanPointAliceDave := mts.channelPoints[1]
 
-	// Increase Dave's fee to make the test deterministic. Otherwise it
+	// Increase Dave's fee to make the test deterministic. Otherwise, it
 	// would be unpredictable whether pathfinding would go through Charlie
 	// or Dave for the first shard.
-	expectedPolicy := mts.updateDaveGlobalPolicy()
+	expectedPolicy := &lnrpc.RoutingPolicy{
+		FeeBaseMsat:      500_000,
+		FeeRateMilliMsat: int64(0.001 * 1_000_000),
+		TimeLockDelta:    40,
+		MinHtlc:          1000, // default value
+		MaxHtlcMsat:      133_650_000,
+	}
+	mts.dave.UpdateGlobalPolicy(expectedPolicy)
 
 	// Make sure Alice has heard it.
 	ht.AssertChannelPolicyUpdate(
@@ -493,7 +507,7 @@ func testSendToRouteAMP(ht *lntest.HarnessTest) {
 	// Alice -- Carol ---- Bob
 	//      \              /
 	//       \__ Dave ____/
-	///
+	//
 	mppReq := &mppOpenChannelRequest{
 		// Since the channel Alice-> Carol will have to carry two
 		// shards, we make it larger.
diff --git a/itest/lnd_mpp_test.go b/itest/lnd_mpp_test.go
index 9a28846dc..960626500 100644
--- a/itest/lnd_mpp_test.go
+++ b/itest/lnd_mpp_test.go
@@ -347,33 +347,3 @@ func (m *mppTestScenario) buildRoute(amt btcutil.Amount,
 
 	return routeResp.Route
 }
-
-// updatePolicy updates a Dave's global channel policy and returns the expected
-// policy for further check. It changes Dave's `FeeBaseMsat` from 1000 msat to
-// 500,000 msat, and `FeeProportionalMillonths` from 1 msat to 1000 msat.
-func (m *mppTestScenario) updateDaveGlobalPolicy() *lnrpc.RoutingPolicy {
-	const (
-		baseFeeMsat = 500_000
-		feeRate     = 0.001
-		maxHtlcMsat = 133_650_000
-	)
-
-	expectedPolicy := &lnrpc.RoutingPolicy{
-		FeeBaseMsat:      baseFeeMsat,
-		FeeRateMilliMsat: feeRate * testFeeBase,
-		TimeLockDelta:    40,
-		MinHtlc:          1000, // default value
-		MaxHtlcMsat:      maxHtlcMsat,
-	}
-
-	updateFeeReq := &lnrpc.PolicyUpdateRequest{
-		BaseFeeMsat:   baseFeeMsat,
-		FeeRate:       feeRate,
-		TimeLockDelta: 40,
-		Scope:         &lnrpc.PolicyUpdateRequest_Global{Global: true},
-		MaxHtlcMsat:   maxHtlcMsat,
-	}
-	m.dave.RPC.UpdateChannelPolicy(updateFeeReq)
-
-	return expectedPolicy
-}
diff --git a/itest/lnd_send_multi_path_payment_test.go b/itest/lnd_send_multi_path_payment_test.go
index 10ad3f4a2..935997c8d 100644
--- a/itest/lnd_send_multi_path_payment_test.go
+++ b/itest/lnd_send_multi_path_payment_test.go
@@ -38,10 +38,17 @@ func testSendMultiPathPayment(ht *lntest.HarnessTest) {
 	mts.openChannels(req)
 	chanPointAliceDave := mts.channelPoints[1]
 
-	// Increase Dave's fee to make the test deterministic. Otherwise it
+	// Increase Dave's fee to make the test deterministic. Otherwise, it
 	// would be unpredictable whether pathfinding would go through Charlie
 	// or Dave for the first shard.
-	expectedPolicy := mts.updateDaveGlobalPolicy()
+	expectedPolicy := &lnrpc.RoutingPolicy{
+		FeeBaseMsat:      500_000,
+		FeeRateMilliMsat: int64(0.001 * 1_000_000),
+		TimeLockDelta:    40,
+		MinHtlc:          1000, // default value
+		MaxHtlcMsat:      133_650_000,
+	}
+	mts.dave.UpdateGlobalPolicy(expectedPolicy)
 
 	// Make sure Alice has heard it.
 	ht.AssertChannelPolicyUpdate(
diff --git a/lntest/harness.go b/lntest/harness.go
index 23f5a8b43..c0a5da7f0 100644
--- a/lntest/harness.go
+++ b/lntest/harness.go
@@ -1614,8 +1614,8 @@ func (h *HarnessTest) mineTillForceCloseResolved(hn *node.HarnessNode) {
 // CreatePayReqs is a helper method that will create a slice of payment
 // requests for the given node.
 func (h *HarnessTest) CreatePayReqs(hn *node.HarnessNode,
-	paymentAmt btcutil.Amount, numInvoices int) ([]string,
-	[][]byte, []*lnrpc.Invoice) {
+	paymentAmt btcutil.Amount, numInvoices int,
+	routeHints ...*lnrpc.RouteHint) ([]string, [][]byte, []*lnrpc.Invoice) {
 
 	payReqs := make([]string, numInvoices)
 	rHashes := make([][]byte, numInvoices)
@@ -1624,9 +1624,10 @@ func (h *HarnessTest) CreatePayReqs(hn *node.HarnessNode,
 		preimage := h.Random32Bytes()
 
 		invoice := &lnrpc.Invoice{
-			Memo:      "testing",
-			RPreimage: preimage,
-			Value:     int64(paymentAmt),
+			Memo:       "testing",
+			RPreimage:  preimage,
+			Value:      int64(paymentAmt),
+			RouteHints: routeHints,
 		}
 		resp := hn.RPC.AddInvoice(invoice)
 
diff --git a/lntest/node/harness_node.go b/lntest/node/harness_node.go
index 64c5eb9b6..71d55d9ea 100644
--- a/lntest/node/harness_node.go
+++ b/lntest/node/harness_node.go
@@ -876,6 +876,19 @@ func (hn *HarnessNode) RestoreDB() error {
 	return nil
 }
 
+// UpdateGlobalPolicy updates a node's global channel policy.
+func (hn *HarnessNode) UpdateGlobalPolicy(policy *lnrpc.RoutingPolicy) {
+	updateFeeReq := &lnrpc.PolicyUpdateRequest{
+		BaseFeeMsat: policy.FeeBaseMsat,
+		FeeRate: float64(policy.FeeRateMilliMsat) /
+			float64(1_000_000),
+		TimeLockDelta: policy.TimeLockDelta,
+		Scope:         &lnrpc.PolicyUpdateRequest_Global{Global: true},
+		MaxHtlcMsat:   policy.MaxHtlcMsat,
+	}
+	hn.RPC.UpdateChannelPolicy(updateFeeReq)
+}
+
 func postgresDatabaseDsn(dbName string) string {
 	return fmt.Sprintf(postgresDsn, dbName)
 }