Sorry, I think I did not explain myself well.
I was asking if Civil3DToolkit had nodes that were no longer in civil 2025, my question is if these nodes have been added in 2026 for example the node to add radius in a profile no longer worked in 2025 PVIandRadius.
Sorry, but I don’t have any information about the Civil 3D Toolkit package. You can read about all of the new features (including new nodes) in the blog post above and the official release notes.
We don’t exhaustively test all third-party packages as we don’t own/maintain them, so I can’t guarantee anything. But I wouldn’t expect any compatibility issues. The Package Manager now shows compatibility information when you download a package, so assuming that the author of the package has updated this information, then you can rely on it