We fixed a djvu file adding some missing pages. Now, something strange appears. Take a look at http://it.wikisource.org/wiki/Pagina:Delle_strade_ferrate_e_della_loro_futur.... Then enter in edit mode. The thumb showed in view mode comes from the old, wrong page; the thumb showed in edit mode is the right one.
Can we force purging of such old thumb/image, presumably saved somewhere from the old djvu file?
Alex