fix: use consumerID for consumer chains if available

chain/cosmos/ics.go

@@ -245,6 +245,16 @@ func (c *CosmosChain) StartConsumer(testName string, ctx context.Context, additi
 		return err
 	}
 
+	consumerID := c.cfg.ChainID
+	consumerChains, _, err := c.Provider.GetNode().ExecQuery(ctx, "provider", "list-consumer-chains")
+	if err != nil {
+		return err
+	}
+	consumerChain := gjson.GetBytes(consumerChains, fmt.Sprintf("chains.#(chain_id=%q)", c.cfg.ChainID))
+	if consumerChain.Get("consumer_id").Exists() {
+		consumerID = consumerChain.Get("consumer_id").String()
+	}
+
 	// Copy provider priv val keys to these nodes
 	for i, val := range c.Provider.Validators {
 		i := i
@@ -265,7 +275,7 @@ func (c *CosmosChain) StartConsumer(testName string, ctx context.Context, additi
 					return fmt.Errorf("failed to get consumer validator pubkey: %w", err)
 				}
 				keyStr := strings.TrimSpace(string(key))
-				_, err = c.Provider.Validators[i].ExecTx(ctx, valKey, "provider", "assign-consensus-key", c.cfg.ChainID, keyStr)
+				_, err = c.Provider.Validators[i].ExecTx(ctx, valKey, "provider", "assign-consensus-key", consumerID, keyStr)
 				if err != nil {
 					return fmt.Errorf("failed to assign consumer validator pubkey: %w", err)
 				}