windows 10 (October 2018 update) (version 1809) deleted all my files

I want to confirm the exact same issue as Robert Ziko has reported. 

On 03-10 I read there was an update out ran the following updates from Settings > Update & Security > Windows Update:

Feature update to Windows 10, version 1809

Definition Update KB2267602 (Definition 1.27.599.0)

Definition Update KB2267602 (Definition 1.27.595.0)

Definition Update KB2267602 (Definition 1.27.571.0)

Windows Specifications:

Edition Windows 10 Pro

Verson 1809

Installed on 03-10-2018

OS build 17763.1

This is a fairly recent Windows 10 Pro install, not an upgrade for a previous version of Windows. The eventlog was purged after the install of 1809 (some workplaces would call this a security incident).

The C:\Users\kay_h\Documents folder was empty

The C:\Windows.old\Users\kay_h\Documents was removed or didn't exist before

The C:\Windows.old\Users\kay_h\ profile was nearly empty basically only contained some C:\Windows.old\Users\kay_h\AppData\Local data. It does have a NTUSER.DAT with the timestamp of the upgrade tot 1809. 

I did try to get the some files back with undelete tooling, without success. I was specifically interested in some VMs but they where very large (>100GB) and the drive had <40GB free. Interestingly there were no deleted files with the time stamp of the update, possibly the data wasn't deleted but misplaced, moved or lost by some other process then deleting.

Totally unfounded & wild speculation: The C:\Windows.old\ folder was used as a placeholder dir in the update process and someone forgot to prepare or made a type-0 in C:\Windows.old\Users%username%\Documents folder as a target for file movement. ;)

With this update I DID notice that some folders APPEARED to be missing. They weren't, of course, My short cut to finding them was to open the program that makes use of them (in this case the Acrobat Reader) when the most recently used documents became visible and then I simply went to C/Users/(your abbreviated email name here) and look at the folders that turned up (which all my personal ones did) and then pin the ones I wanted to Quick Access so I wouldn't have to hunt for them again.

What I did NOT do was go insane and start screaming at Microsoft that their update had deleted my files. The update is not programmed to do that, I could program it to do that by making this a "clean install" (as I mentioned earlier) or a hardware failure could cause this.

But not the update.

By the way, rollback failed since the drive that it was trying to roll back to was corrupted. So far I have removed the partitions from the SSD (I actually had to go back to diskpart, and am trying to install Win 10 from scratch. It is about 60% complete at this point.