Category icon not being pulled through from settings in search bar

Most of our icons are pulling through, apart from one. This is the code I have:

[gd_search post_type=”gd_place” post_type_hide=”1″ customize_filters=”default”]

So, when a user clicks in the ‘search for’ box, the list of possible categories comes up and they show (apart from one) with their icon which is being taken from the customised pin that we uploaded for the category. However, one is showing a ‘folder’ icon. There was a folder icon set for that category (in addition to the pin) but we have removed it, in the hope that the icon in the pin will show.

Do you have any suggestions as to how we can either stop the drop down for the categories from showing (as they can already select this from the tool bar option) or to force it to show the correct image?

Thanks.