Integration Server and Enterprise Server via BrokerPackage

I have 2 Enterprise brokers set up on the same machine (ports 6849 and 7000) and need to connect them to my Integration Server. In the process of using the BrokerPackage and setting up the Alias in the IS admin page, I am running into a practical issue - In my Development environment, I have only one Broker Alias set (for port 6849) and have created Flow Services for that broker. Now how do I migrate the same services to be able to talk to 2 brokers on different ports, but for the same IS?
Thanks in advance for your assistance.