All the route and itinerary distances are in the right format (miles, as per my preferences) on screen but the CSV file shows distances in Metres. This is the first time I have exported a route as a CSV file so not noticed the issue before.
Might be worth raising it as a bug
Before I do what is the difference between \"Link distance (miles)\" and \"Link distance (raw)\"?
I suspect raw is going to be something like feet.