Be careful with all fields, and all airlines, on StaffCV. If you are using a wheel mouse to scroll the main screen up and down before updating, and the mouse cursor is moved ever so slightly, from near the scroll bar on the right towards the individual information fields which have selectable items, it will lay across the embedded object for the particular field and
change it. As luck would have it, it will probably occur after you've checked that field for correctness before final entry. And its seems to be without needing to right click and select the field, either.
I found this out when reviewing my CV, and and saw my licence was of a lower category than entered. Not sure how long it had been that way, how may opportunities I might have missed, took lots of experimentation to figure out what had happened, and US$5 to update!!
My advice is the same as Germaine Greer's was to Tony Blair - "Stay Off!" (The wheel on the mouse, that is...)