I've been trying to run a simple test, where I read in a 12D XML file, then write the same data back out. The 12D file is read in successfully, with all expected data and attribution, but when writing back out, there is an issue with the geometry of the included TIN.
The TIN feature is written, but is missing all of it's geometry parts. The image below shows the TIN from the read input file:
This image shows the same data when output to a new 12D XML file:
The vertex pool exists, but with no parts.
Anyone have any ideas why this may be happening?