MB and MT reported that many of the IML files are now fixed. Went back and updated my conversion code to take account of the fact that the header metadata is now removed into three separate remote files, and ran the conversions against MND and MV files with apparent success; DJ has the former files and JJ the latter, for checking and to use as the basis for further editing work. I now have to handle one remaining stage, which is the processing of the text-node-level ligature/glyph encoding.