Version 5.0.0 of TournamentSR can load the registration file created by TrackWrestling. Track supplies a ZIP file which contains a CSV file. Once you've extracted the CSV, use TournamentSR's "File"/"New..." menu, "Base on a preregistration file" button to load the CSV file.
We have completed a new tutorial to demonstrate importing a preregistration file from TrackWrestling. Go to the Help page and download Tutorial 3.