I've set up the framework file for the new translation, which is huge, and done a bunch of search-and-replace by style in an ODT version to cut down on the encoding work. We already have one font problem: one of the headers (which are bold) includes the title of a work (which is italic), and the bold/italic font that we fall back to is impoverished with regard to Unicode character ranges, so the o with ogonek is lost. I've had to add an extra tag around that title where it appears in these contexts (<hi rend="normal">) to unset the bold for that specific text run. I think I've had to do this before.