You can edit a section in the middle of a route and the leave the rest of the route in tact by using the Replot Section Feature under the Plot menu at the top of the route planner.
is it possible to adapt a route you're working on half way through? So for instance when I have a 50 km. route and I spot a mistake at the 25th kilometer, can I still edit that withouth undoing the latter 25 kilometers?
Thanks in advance,