Trigger on Reschedule added to current BookingWP integration
The ability to add tags AND update the Appointment Date field when a user reschedules their appointment.
Here is some feedback from the developer of BookingWP that should help
This action is triggered after the appointment has been rescheduled:
do_action( 'woocommerce_appointments_rescheduled_appointment', $appointment->get_id() );
You can hook into it or can forward this to the developer to include it in their integration.