You can export both your bookings and your contacts (guest data). Please note that you need owner or admin rights in your CentralPlanner account in order to export all data collectively.
Export reservations (in Excel format .xls)
Exporting reservations for one day
You will find the export link at the top right of the day view.
Export reservations for one month
Click on Bookings at the top of the blue bar
Select the calendar icon in the date bar and enlarge it using the two arrows
At the top right of the monthly view you will find the export link
Export all reservations
Click on the cogwheel at the top right and select Account settings
In the sentence below the menu items, click the all bookings link
Exporting contacts (guest data)
Click on the Contacts tab
Use the link Export contacts: all contacts
Alternatively, you can also use the link in the account settings (see above)