Hi, I'm wondering if there is any way to merge workouts?

I often run on my lunch break and like to enter most of my information as soon as I get back.

But I only upload my Garmin data once a week or so, so I end up with duplicate workouts--the original I entered with no GPS data and one that consists only of the Garmin data. Ideally, I would be able to merge them or even better, have the Sync determine that the GPS data goes with an existing run & add it to an existing work out.

Is there existing ability to do this or is it dreamware?

Thanks for any info.