No. The current functionality does not support bulk import of reservations from other PMS (Property Management System) platforms.
However, it is possible to import reservations from Booking.com, Airbnb, or other OTAs (Online Travel Agencies) using the iCalendar service.
Check out the following articles:
🎥 Connecting a Booking.com property with BedBooking
🎥 Airbnb and BedBooking integration
🎥 Setting Up the BedBooking Connection with iCalendar