So I searched my hard drive and the files with original names were not present, but I got a tip from Microsoft that worked. I will post their answer here too Please note that usually files name have timestamp when you are backing it up using file history. Here is Powershell command, which will help you rename all the files in the folder (removing only the timestamps).   start in file I want to work on click on file and then as shown below 5. Then type the following command: Get-ChildItem -Recurse | Where-Object { $_.Name -match " ?\(\d\d\d\d_\d\d_\d\d \d\d_\d\d_\d\d UTC\)" } | Rename-Item -NewName { $_.Name -replace " ?\(\d\d\d\d_\d\d_\d\d \d\d_\d\d_\d\d UTC\)", ""} Note: It is recommended that you have the backup of the files just to be on safer side. ... View more

Thank you Todd. I will check it out tonight and see what I have  Sent from Yahoo Mail for iPhone ... View more

Wow. Thank you for all of your help! I will dig into this later in the day when I am home. Larry  Sent from Yahoo Mail for iPhone ... View more

I had multiple copies of folders and files, so I decided to clean them up using explorer rather than in lightroom, which I realize now I should have done. So i clicked and dragged folders and files onto a new hard drive. Thats all. Nothing fancy - stuff I have done with excel, word and other files over the years. After I moved a folder, I checked to see if the right number of files were present and then I loaded a photo or so to make sure they worked. I noticed the addition to the file name but failed to realize the impact it would have. But it is done now so now I need to deal with it and that is what I am trying to figure it out ... View more

I was using Windows File Explorer. I wasnt aware of any renaming at the time of moving them. I did check files to make sure they imported ok before deleting the originals but didnt realize the significance of the time stamp until it was too late ... View more