If you have Leica scanner, these should have the scanner positions written in point cloud. Also, it depends how it is exported from Cyclone (there should be option to set it). Is it terrestrial laser scanner?
Where are you comparing those data? In CloudCompare? If so, what were your export settings?
As I wrote, for one scanner position is created 6LSPs, when the point cloud wasn’t modified. Do you have more scanner positions? If so, can you export your point cloud as structured from Cyclone?
If you reimport that created E57 back to CloudCompare do you see the TLS there? For me it is without scanner position.
This could be helpfull for you: How to import any scan data to RealityCapture using CloudCompare and Faro Scene (How to create ordered point-cloud from unordered) - #13 by Anonymous_536f5f9e4b