One of the main reasons I purchased the GO Supreme 6 was from researching I thought it was possible to plan a route in MyDrive (say from Kansas City, MO to Savannah, GA) and then modify certain portions of the route by dragging and dropping the route to avoid or travel through certain areas. For example, the route from KCMO to Savannah goes through Atlanta, GA but I don't want to drive through downtown Atlanta. In MyDrive, I'm able to manipulate the route by clicking and dragging the route around the outskirts of Atlanta, BUT I cannot send that modified route to my device. I can send a destination or I can send a route with "stops" (specific waypoints, if you will) but there is no way to send a manually modified route. You can do Avoid Routes on the devices but you have to scroll through EVERY turn until you find the turn before the area you want to avoid...this is less than ideal...it's time consuming and not intuitive, especially since you can't see an overview of the route to know exactly where you need to start the "avoidance".
I contacted Support and after about 6 emails trying to explain what I was wanting, was told that functionality wasn't available and that I should post in the forums to see if anyone else had any insight or was interested in this type of functionality.
Any input, suggestions or support would be greatly appreciated.