Hi Leo, Apologies if you are already aware of this. We noticed that forthcoming changes to python-ligo-lw (https://git.ligo.org/kipp.cannon/python-ligo-lw/-/commit/a292464f1c4742548432b2b0ac635dcc86ac82e1) will break the reading code defined in skymap/util/ilwd.py as `IDTypes` will be removed. Not sure if it's easily possible to patch this to work with the changes (I ping @tito-canton who has looked at this on our end as well). Thanks! Ian