Basecamp loading maps from device at startup

When I start  Basecamp and connect a device (ex. Edge800) it takes (every time !) very long untill complete, sometimes half hour. In the meantime, it is possible to work in Basecamp, but all very slow :-( . In fact, I just need the tracks, routes etc. from the Edge800, not the maps. Is there any way to prevent Basecamp from loading the maps from the connected device ?