Samovar:
You might be able to find another user with ArchiCAD 14 who could use the new
Import Surveyor's Data as Mesh feature on your data. The data in the .xml file would have to be translated into a .txt file, if that is not too laborious, then this could be a very efficient method, as this new feature creates a mesh from the data points.
There is a movie about this feature:
ArchiCAD 14 - Productivity Improvements
David