In Khan Academy Reimagined, in Class Overview > Reports > Activity, skill levels achieved horizontal colored bars are no longer shown.  I used the old report to track my class in real time (with only a 5-10 minute lag).   I could easily identify which students were off-track or having difficulty from my dashboard, look to see what they were currently working on and then walk over and offer specific help.  I cannot do that now.  Also, the weekly email summary doesn't show skill progress any more. If you can't fix the new version, I would be happy if you brought the old version back.