Related Questions:
Why are some Bookings not showing in my Bookings Pipeline or List View?
Answer:
Once a Booking has been Archived, it sometimes disappears from your Bookings Pipeline or List View if you have the Filter "Archived = No" enabled.
Click on the Bookings button in your navigation bar
Make sure you remove the "Archived = No" Filter at the top-left of your screen
Select the drop-down arrow on the right-hand side of the Booking in your list or Pipeline Item that has a little Archived Icon next to it.
Select Archive/Unarchive
Select the Unarchived button from the dropdown and press submit