Not quite sure which version you have, but original T:ANE only made marginal changes to the route file formats. That included a replacement for old lighting data structure, from TRS2004 days. The previous lighting environment now showed up in psychedelic blue. Was fixed in TransDEM 2.6. However, SP2 is a totally different story, because almost every piece of data will now be stored in per-baseboard files. If have run a couple of preliminary tests with blank routes right out of the TransDEM route generator and didn't find any issues on the Trainz side so far. But that's rather superficial observation at the moment. I haven't started yet to address the new file formats. Another update to TransDEM 2.6 will come first, dealing with the challenges of 1m LIDAR DEMs and the enormous amount of data that comes with them. Plus a few new DEM data sources from the US, Germany, Luxembourg, Austria and Victoria/Australia.
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