Carthago2 said:
I am concerned about one thing, I read that there was a Windows Update 20H2 which would prevent the saving of my apps..
No need for concern. Yes, there was a bug in early builds of 20H2, but....

  • it only prevented keeping apps when performing an in-place repair install on a 20H2 machine with 20H2 install media.
  • this bug was fixed in build 19042.662.

As long as your installed Windows is build 19042.662 or higher then this bug has been fixed and you'll be able to keep everything.
doing repair-install for 19041.1, the warning for keeping all my data