I had the ability to convert the track coming inside the gpx(track,route) to a route and I sent that created route to DEZL 570 . I found that the new created route transferred and dezl read it as track . How can I prevent Garmin from calculating the route inside the dezl? If I see the track inside the dezl I find it as I designed but If I instruct the dezl to start the track the track changed and re-calculated ?? How can I prevent this calculation ??
You can't, your Dezl will use it's own algorithm and settings.
As an aside please try to use the correct words or it will confuse those new to all of this. Your Dezl cannot work with tracks. It didn't therefore read the route you sent as a track, but as a route. This FAQ may help you:
Note that I've found on my nuvi that provided you don't try and alter the route on the device the nuvi will follow the route I've sent. Only if you change it somehow or do a recalculation does the route then possibly change.
As I said, on my nuvi provided I don't do an edit to the route the nuvi generally works as created in BaseCamp. Not sure if that will be the same in your dezl so you'll need to try it and see.
In any case I always check my routes beforehand to ensure the route is doing what I expected.
