Testing out services

I am trying to test out some services provided by my app. However, I don't get the system to update the services for me to test it out, the services don't change when I change the Services items in the Info.plist of my app. I have tried moving the app to /Applications, . Running the pbs CLT still loads the old services, even reporting an old version of my app in a completely different location, where it does not even reside anymore (using the -dump_pboard option). So how can I really force the Services to be updated? And is it possible to use a particular instance of my app bundle (different from the installed one) to be loaded?

thanks,
Christiaan