I'm not sure this is a bug, but when vehicle skins are built into a terrain, the text file name for the skin isn't over-writing the default's name and author that shows in-game in the Hanger. Or maybe I've forgotten how to do it.
I'd hate to offend Greebo and the other skin artists.
btw, I never got around to testing the treenamemap.txt file for converting summer trees to winter. I'd already used a slightly different conversion list.