6 Aug 2024, 19:42

@John-S-Parry

If you set, Main Screen Settings,Navigation. Route Recalculation to Off.

That doesn't prevent the route being recalculated. It only prevents it from being recalculated automatically if you go off route.
The route will still be recalculated if you press Skip, for example.
Or if the map on the Zumo does not match the map in Basecamp - it will recalculate on transfer and on load.
Or if any of the settings in Basecamp ticked
Or if you change the routing preferences , vehicle type, or avoidances while the route is loaded.

So if you use MRA for routing it will recalculate in the Zumo XT as you are not using the same map as is held in Basecamp or your unit. To mitigate this I import GPX 1.1 Route +Track and enable the track and the route and put additional shaping points in the route to get it to match the track if required. I use the option of Recalculation Prompted. This means if I wander off route I can wander back as long as I can see the magenta line. Guidance goes silent if you do this but it resumes as soon as you are back on the line and I have the option of recalculating as well