Quick Pipeline Question

We have a Biztalk Pipline project that references a C# project that has the following:
public class SoapHeaderAdder : Microsoft.BizTalk.Component.Interop.IComponent, IBaseComponent, IPersistPropertyBag, IComponentUI

If we want to change the C# code to promote a new field, do we have to recompile the Biztalk Pipeline project?

In other words, since the stages of the pipeline are still the same, does the pipeline have to be recompiled and redeployed, or can we just redeploy the C# code.

Thanks,
Neal