When searching with the Find & Replace dialog, it should be possible to search for direct list formatted paragraphs. Maybe a checkbox is sufficient with that it searches for list formatted paragraphs in the xml structure of ODF. Paragraphs belonging together as one list should be handled like one paragraph so that the user can proceed with the whole list as one likes, e.g. assign a new list sign or a style to the whole list. With such a feature (in combination with list style assigning) the user can replace direct formatted lists with a list style.
Ok -> NEW