I'm trying to book IAD-VCE. Obviously it will go through FRA/MUC using LH for the last segment. We all know that .bomb can't handle this, yielding up only lower priced fares (in my case S) if available.

Anyone have a trick to help the system show me a W fare?

In the past I've simply purchased the LH segment separately (because who cares about upgrading a short intra-Europe flight), but I'm thinking there has to be a better way.