reverted 4.7 route to 4.5 and it works!
If I didn't see it happen with my own eyes, I wouldn't believe it, I reverted the ( large ) route I have been working on with TRS 19 SP2 back from build 110491 (4.7) to build 105096 (4.5). At least now I can continue working on my route, it wasn't possible under SP2, too many issues with tracks and other splines ( See my earlier post in this thread, #157 ). I know it's mentioned that it isn't possible to revert to an earlier version from 4.7 but I seem to have proved that as wrong. My route doesn't show any errors or missing assets and no strange behavior at all.
Here's how I did it, I made a .cdp of the route and stored it on another local harddisk, removed the TRS19 install from my pc ( everything, registry entries included, I used a freeware program called BCuninstaller for that ) and restarted my pc. I still had an offline install folder for build 105096 , used that one to reinstall TRS19. Then I imported the route in my new install , of course it showed as 'incompatible' in CM. I used AssetX to change the build number to 4.5, submitted it and lo and behold, I have my route back in build 4.5 . I am happy. No more patching for me until I am 100% sure SP2 is fixed.