I had already spoke with McAfee tech. I was careful and highlighted the file I wanted to shread. Now how most of my documents got picked, I have no guess. But then, I must have missed something on the instructions. In any event, I used my backup to restore most of the files. Upon checking the result, I found four missing files and was able to restore two of them by updating these files from the backup.
Now for the other two files, I will try your solution first orI will have to make a new files from the paper copies. This will take me about 45 minutes to an hour. I should have given more details in my post. Thanks