Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1b3) Gecko/20090305 Firefox/3.1b3 During the initial or later imports the form history of Internet Explorer doesn't get imported. The made searches in IE aren't shown in Firefox later. Steps: 1. Load http://www.mozilla.org in IE8 2. Search for Firefox 3. Accept that IE stores form history 4. Close IE and start Firefox 5. Choose to migrate the data from IE8 6. Open http://www.mozilla.org in Firefox 7. Search for Firefox After step 7 no autocomplete pops-up. Even the formhistory.sqlite doesn't show any entry.