On several of my maps including Collective, and Docks I Plaza I got rid of all the old images. However, the thumbnail you see on the map list is still the same old one; is there a way that I or someone else can change that?
you can do it. You need to take new screenshots, share them, and then go into "Edit Description" in "My files" (in game) and pick the shot you want to be the default thumbnail first, then pick two more. I think there is a "save changes" button, then you're set!
@Pedaeus There is an option that appears on the right side of your Map Post that says "Edit Thumbnail" or something to that affect.