With regards to Sebastien N.'s remarks, why not having the option to have it split, or have it as a single, multisport activity? Maybe have it as a preference option, or choose it when uploading.
I did a run-bike-run yesterday, recorded it on a Forerunner 305, and uploaded it to Strava. I got three activities. Although that's a little annoying, as others have already noted, I'm not complain...