Why does it do It?

[Sapper]

I set a route on my lap top then transfer on to my TomTom camper, check later and all's fine!

Then when I'm ready to go, very often the route as changed to maybe a shorter one but one I don't want to travel, why?

Appreciate any help.

 

[Willy875]

Normally, if you plan your route and then save it to your routes, there should be no deviations.
You need to add as many waypoints as possible to force your GPS to follow this route.

 

[Sapper]

I'll give that a go, thanks