Changing Name from Two Bedroom to One Bedroom

Currently we have a listing and it is saved as a Two-Bedroom Home

Booking.com wont allow us to change this to a One Bedroom Home, saying this:

Why can't I change the property name?

There are upcoming bookings for this property. You cannot change the property name until all upcoming bookings have been completed.

How do I change this from two bedroom to one bedroom without creating a new listing.

Thank you - Steve and Julia