This was posted by Roy's Trainz on the Payware thread, but I thought it was interesting enough to copy his post on this forum, as it is something that I fine myself confused about at times when replacing a route with a newer or updated version of the route. I am always worried about losing my sessions. Now this probably will not work if your session has content that includes things in the older route that have been moved or changed or deleted, or that you have added in like portals at the route level. Naturally the replacement route won't have those items, because they were not in the original route, so your session may not work. But if the changes in the new route don't involve major changes, it may well be that session(s) that you have created may work in the updated route.
Anyway, here is an easy way to do this change using Content Creator Plus which is in CMP. It involves a couple of clicks of the mouse, and you are done. Easy, even for me.. The experts here probably already know this, but for us newbies I think it is a big help.
http://forums.auran.com/trainz/showthread.php?95666-Roy-s-Trainz-opens-its-doors/page25
Anyway, here is an easy way to do this change using Content Creator Plus which is in CMP. It involves a couple of clicks of the mouse, and you are done. Easy, even for me.. The experts here probably already know this, but for us newbies I think it is a big help.
http://forums.auran.com/trainz/showthread.php?95666-Roy-s-Trainz-opens-its-doors/page25