Hi @annika,

Thanks for sharing your question! I've created an Idea here to add support for the IFC Rail project, if you would like to upvote it and share your use case.

We don't currently have active plans to support IFC Rail specifically, but we're currently tracking an issue (FMEENGINE-30313) to support the IFC Alignment Extension (idea here), with no timeline for that yet. The expectation is that when we add support for the Alignment Extension for alignment and road types, we will likely have some support for rail types as well.

If you're able to provide any sample data, that would be really helpful for our development team as well! If you're able to share any data, please feel free to send it to the fmetrial email that we've been chatting through and I can attach it to the enhancement request that I've created (FMEENGINE-62080).