Related Questions:
Create a link between my cloned bookings
Connect my cloned booking with my initial one
Answer:
Once you Clone a Booking it does not 'link' to the original one. You can, however, view all associated Bookings under the Contact (shown below)
Following the steps here to access a Contacts Bookings.
Additional Information:
If creating a link to the original Booking is necessary within the cloned Booking, consider creating a Booking custom field to manually input the number of the original booking in the cloned booking, and vice versa.