I completely agree! I backup up my system right of of the box, I got it yesterday because all the horror stories about these updates, I bought for myself DIY and did an update to scan my Jeep Commander, already had to put the old software back to look into this further, I don't know why Autel doesn't provide a proper change log on the update screen with everything changed. If you put what you add but not what you take then it is misleading! Looking at my old Chrysler software v4.10 I had a black dot in all the ecu slots in the first row, after update all the dots were removed on majority of the vehicles. I am talking about the little arrow you click on in the logo.
A backup would make many happy or the ability to revert back to a version you have success with!