Based on your description, i did a test the same you.
But the result was different with you. The files weren't deleted in the folder .
But based on my research, it is not the best practice for the moves of redirected folders.
And we should not configured the path change in the sub ou, since there is a policy conflict ,it will make the environment more complex .
To change the path of the redirection folder, we'd better enable optimized move in Group Policy ,then Relocate the file share for redirected folders.
For more details you can refer to the following link:
For security , we also need to back up the share folder before any changes for the path.