I have had same prob for 3 weeks now, tried everything like you have described and others suggested,also tried moving files location, and too like you i have many diff rooms which i can load all of which revert back to previous saved room, i can load rooms in editor, make changes and save them, but always when i go back to room its the one saved from 3 weeks ago, also emailed support 2 weeks ago and the said looking into it, but never heard back, hoping new update is only chance of fixing it