Yeah I missed those. I deleted all the "Unassigned" ones but the groups had "Default" twice. My guess is that you ran the file through the upgrade process twice. If you opened up the file in 2016.38 and saved it, then opened it in 2016.37 and saved it, and then back in 2016.38 it would mess the file up like this because it would do the upgrade conversion twice. I don't check whether the tags already exist because we stated once you go to 2016.38 there is no going backwards.