Well I turned on after moving or removing files it did not want. I was not aware that it would delete my local files and change many of my settigns. THe worst thing is that many files were lost. I cannot explain what happend. It is fortunate that I had a one day old backup. I still not sure what all is lost. Based on moving from onedrive "backup" back to my local drive over 1000 files just seem to disappear. I will look at your recommendations but I can find no reason why the files disappeared. There is no logical order to missing files.
If there is a tool to compare 2 files systems and find differences, paid or not, I would like to have it.
Thank you for your help. I believe that the oneclould backup should clearly state what it will do to your system as a large warning. It is not what I could call a backup - it basically moves your files to the cloud and changes many many setttings on your local system. Very poor design without sufficient waring, Microsoft should not call it backup rather "move your files to cloud".