Start Jasper on the old machine and select
Menu → Jasper → Export Data.
Open data directory to display the directory. Copy the
main.db in the directory displayed to your desktop. Move these data to your new machine using Google Drive or Dropbox etc.
Start Jasper on a new machine. On the first configuration screen, select
Click on the
Open data directory to display the directory. Copy (overwrite) the
main.db that you just moved into this directory. Finally, click on
Restart Jasper and your data migration is complete.