VC Transport WS References

Hi guys, I would like to ask how the transported VC models work when I transport them to a QA system using NWDI, the thing is that I have several WebServices in my models that I get from the service registry, every WS that I call in my VC are called from an SAP ABAP, SAP JAVA or third party system registered as physical and business system in my SLD /  Service Registry.

So, the question is, do the VC models take into account the Service Registry references in each environment where the model is moved ¡? Do I need to modify the model everytime I move it from one environment to another !? what is the best way to take care about the lifecycle of my models !?

Any help will be appreciated !

Thanks !