ClydeReid,
2 Quotes below from this site (NOTE: These are for Windows 10. I don't if there are same issues in Upgrade scenarios like yours ~ Win7 --> Win10):
https://www.windowslatest.com/2020/02/17/microsoft-is-investigating-windows-10-kb4532693-issues/
“People who have it installed are reporting that Windows 10’s desktop, settings, and Start menu boots in a default state as if they’ve have created a new user account. Any apps and programs that were pinned to taskbar or desktop such as shortcuts have disappeared.”
“For some folks, Microsoft’s buggy patch has also reverted Windows 10 customization and other settings to default values.”
Another article:
Windows 10 KB4532693 & KB4524244 Update Causing Trouble [Easy Fixes]
https://www.techworm.net/2020/02/windows-10-kb4532693-kb4524244.html
There was another site that mentioned the same issues of 'disappearing' items, but I don't remember the link at the moment.
One of the things many sites mention to try first is:
"Before trying out any of the fixes, we would advise the readers to restart their PCs at least 3 to 4 times."
If this doesn't work, Microsoft is saying the Update switched to the default user.
All of your files/settings/etc. are still there, you just have to log on to your account (vs the Default account).