Backup options and migrating
All plugin options are stored in database. You are free to switch the themes without losing the plugin settings.
!!! However it is strongly recommended to make backup before any theme switch or WP/Plugin/Theme update.
Backup/Migrate options
You can backup or restore options with plugin integrated backup tool.
Go to WP Dashboard – Tools – Backup Front Page Builder Options
To backup your plugin settings hit “Download as file” button and save the file on your computer