I have a project that is setup to checkout source from perforce using an existing perforce client. If I run it once, it works fine but if I then change the client view to include a new directory to be checked out, the change is not reflected in the next build. Instead, the new directory is ignored. It seems as though it has cached the client and is not checking to see if the client changed since it last built. How do I go about forcing it to recognize the changes?