1. TREE
2. BACKUP/RESTORE
3. Select catalogue
4. Select a route from the specified catalogue
5. ADD file, it will be shown on in the right window
6. Select BACKUP device
7. Select USB stick where to transfer the file
8. The selected route file will be exported as a .dat file ready for transferring to other systems
More details can be found in the CHARTPILOT 1100 user manual (Chapter 8.1.2 - Data Backup)