At the moment, if a date is marked "YES" as closed for arrival or departure in the calendar this will display in the booking engine as greyed out rather than crossed off even if the property is marked unavailable or booked via and external platform (e.g. AirBnB) for those dates.

This is confusing for prospective customer - it would be much clearer if priority was given in the hierarchy to dates marked unavailable and these dates were crossed through by default.