Convert Streets and Trips file to track before recalculating?

[tombarrington]

A friend who plans one of our annual trips is a staunch MS Streets and Trips user (2013 version!). He loads these into an older Garmin Drive navigator for his bike. I end up converting his exports through GPS Babel and then importing into Basecamp for a sanity check and to use in my own Zumo XT. As such, I often find that Basecamp calculates a slightly different route which I then have to inspect turn-by-turn to make sure we match. I was wondering if there is a way to import his files into Basecamp such that they exactly match what he created so that I could create a track and plan an identical route from that. Or, could I create a track outside of Basecamp that could then be imported? It's not a show stopper but there have been a few times when I've had to turn us around because we missed a turn.