Gary:
What I do is keep the last working copy of my Web Service Implementation class in a separate location. When I add a new method to the WSDL, I let ME regenerate the classes again, then I cut and paste the methods I’ve already worked. This approach works for ME 5.1.1. For my more advance service, ME 5.5M1 allows you the option to overwrite the existing Web Service Interface and Implementation class. I choose not to overwrite the Implementation class, but instead I just add the stub using the interface definition version and build the method in the implementation class this way….
This may not be the ideal practice and I am sure it can be automated better, but it does work with the tools and it keeps the development process going. I hope this helps you…..
Russ