Changing MS Accounts - Handling Onedrive Folder(s)

I have a users and he is signed in on two devices with the same MS account. He wants to assign the second computer to his wife with her own MS account,

As a starting point, the files he has on Onedrive he wants transferred to wife's account. From there they will do their own thing and files will not be shared / sync between him and her..

My proposed process

Ensure Bitlocker is disable.
Sign out of edge.
Unlink OneDrive account (current setting is to keep a copy of all files locally on both computers)

Switch second device to a Local account
Restart and ensure she can log in locally
Switch account type from local to her Microsoft account
Log into Edge and OneDrive

My question centers around OneDrive. As it is set to keep all files locally will these files simple start syncing with her OneDrive account. (I'm thinking some how these files are id'ed as his and Windows will create a new OneDrive folder for her)

I've read on the web the answer is no they will not sync as they are his. Some suggest copying all of his files to a the root of c:drive and then copying them back into her OneDrive folder. I was thinking I could also copy all files from his OneDrive account to the local libraries (his) and therefore she would inherit them when we switch from his MS account to a local account.

Example copy C:\users\him\onedrive\documents to c:\users\him\documents

Then I would just enable Onedrive backups of all local libraries. once I've signed in. Huge number of pictures I don't want to lose or create multiple copies.

Thoughts / comments / proper way of doing?

If signing in with her MS account does not assume ownership/syncing of C:\users\him\onedrive I assume I will have to at some point delete his old OneDrive folder.

I guess if I boil this down, when swicthing from an MS account to a local account and then to a new MS account is the same user folder maintained or does Windows create new user folders.

So does c:\users\myfiles under MS account become c:\users\myfiles2 when switch to local and then become c:\users\myfiles3 when the new MS acount is used.

Thanks

I don't have any experience or practice with this. As for theoreticals I can only guess, but I think it would be relatively few "principles" instead of zillons of tricks and "small rules" for every concrete situation.

I have my files w/o any ownership out of C: (I know your problem isn't like this, this is only to show how much could I know about files ownership) b/c I started compiling files I wanted to keep even if I swapped computer reinstalled the OS or swapped the disk, years before I started to use Windows 95, the 1st Windows I used seriously. Before that it was DOS age for me.

I would fear the ownership is in the files themselves and Windows honors it like if it was money in accounts. You don't want lost transactions or money in wrong accounts lol. In the banking world you can do payments and donations etc always as such and under the control of the system.

So my guess is you need a "takeown" of some kind.

You want to avoid this I suppose. If it's a lot of files and even if not, local disks reliability starts to play. But this is what Google IA thinks:

Microsoft Accounts (Personal OneDrive) do not support directly transferring file ownership. To transfer files between accounts, you must share the items with the destination account, have the new owner download the files, and re-upload them so they become the sole owner of the new copies. [1, 2, 3, 4]
Follow these steps to migrate your files:

Step 1: Share the files

1. Sign in to your OneDrive account.
2. Select the files or folders you want to transfer by clicking the circle icon next to them.
3. Click the Share button at the top of the page.
4. Enter the email address of the second Microsoft account. Ensure the permission is set to Can edit so the new account can modify the files.
5. Click Send. [1, 2, 3]

Step 2: Download the files on the new account

1. Log out of your original account and sign in to your second Microsoft account.
2. Go to the Shared tab in the left sidebar.
3. Open the folder or files that were shared with you.
4. Select all the files and click Download at the top of the page. This will download them to your computer, typically as a .zip file, which you can then extract. [1, 2, 3]

Click to expand...

Thanks. Not sure how I would do this with thousands of pictures.

I've been giving this some thought and the easiest would be for me to copy out all files to an external and just create a new user.

This is really crazy that MS doesn't have a documented process. I'm sure there are people, that for what ever reason, want to give up an account and move to a new account. (Not the alias process) Maybe it was a shared id with a spouse, or the id is the target of mass emails. There should be a method documented.