When merging routes, can they be rotated to keep the same East-West or North-South orientation as the main route? Or are they fixed in their original orientation?
I have done this in the past John. What I did was back out until I could see the 4 corners of the baseboard and mark the corner points with something obvious like a red UK phone box or a flag on a pole. Then I could copy the square and rotate it. It was not always 100% but close enough and just a terrain tidy up to finish. Some artistic licence and best guess but what I have suggested is about as good as it gets.
Actually, with the S2.0 Scrapbook feature, I just need to copy the baseboards from the route that I had planned on merging and paste them into the route that I am building.