Logbook Pro allows you to export your data as a .BAK or .LBK file, and we've had excellent results with .BAK exports.
For detailed instructions, refer to page 128 of the Logbook Pro Desktop manual: http://download.nc-software.com/docs/LogbookPro-Desktop.pdf
Please ensure that the file is unencrypted so we can access the data and convert it for you.
Once ready, compress the .BAK (or .LBK) file into a ZIP folder, then send it to imports@logten.com, and our Data Team will be happy to convert and import your complete data!