You should be able to export your Flight, Aircraft, and Crew data from RB Logbook in a CSV file, which can be imported into LogTen.
If you are using a Mac, you can import this data yourself using our Importing spreadsheet files article. If you are using iOS or would like us to do it for you, we can definitely assist.
To export the data from RB Logbook, you will have to export three files: one for Flights, one for Aircraft, and another one for People. To do this, on the RB Logbook app, tap on the "More" tab at the bottom right, and tap on "Import & Export Data". In the new screen, you should see an "Export to CSV" option.
Choose a date range (or toggle "All Flights") and select, under "report type" which file you want to export, and tap on "Generate Export".
You can then use our Import from File feature to import the logbook into your LogTen, or send the CSV file to imports@logten.com, and we'll be happy to assist you!