New Bookings are imported. Modifications and cancellations to bookings are also imported.
Existing bookings are not automatically imported when the connection is established, those created in the last 30 days before the connection can be imported using the 'Import Existing Bookings' button . If the bookings have previously been sent to another channel manager, Expedia will probably not resend them.
Existing upcoming bookings can be exported via a CSV file downloadable from Expedia, see https://api.beds24.com/csv/putexpediacomcsv for instructions.
AlternativellyAlternatively, existing bookings can be entered manually to block the dates at other channels, manually added bookings are not updated if modified by the channel.
If you want to not allow channel modifications by default you can change the setting for "Allow Channel Modifications" value" in SETTINGS->CHANNEL MANAGER.