I have an itinerary BWI-ATL (overnight) ATL-UIO, UIO-ATL-BOS coming up next week. However, work has now moved me from the Baltimore area and I will instead be elsewhere where taking BWI-ATL is no longer a possibility. Has anyone had any luck dropping or skipping the first segment of an itinerary and still flying the rest of the ticket? I can make it to Atlanta for the subsequent flights, but not the first leg. When I called the Diamond desk the quoted $900 to simply drop the first leg of my trip (of which I only paid $500!). Seems crazy, right?! Or am I crazy?

Any advice how I can still fly this ticket without being in BWI is greatly appreciated.