I'm currently working in a big railway project that uses a bespoke GCS.
I was following a forum post that explaining how to create a transformation. In the process the seed file "UserOverrideGeodeticTransformSeed.asc" needed to be altered.
The heading of the file contain the following text:
"# In case of absolute necessity it is possible to override the list or# order of the grid shift files for a specific datum transformation.# This should only be done if no other solution is available.# Bentley Systems would be glad to introduce new files directly# referenced by the built-in system dictionary as part of a refresh to# its software. Contact Bentley system through the normal support channel."
As you can imagine this new GCS is a big headache with all the legacy data.
Is there anyone in the position to help?
Thank you in advance for your time.