Bug: Save overwrites progress with old!

When more than one window is open editing one checklist, if you make and save edits to one window, and then accidentally click on the window that has older content checklist in it, and then click Save, it writes over all the new progress made!!! This is NOT ok!

I’ve lost so much work this way when I accidentally leave a miracheck window open from a while ago and click into it by mistake to make edits.