P: Moving files, resulted in deleting the files

There is something really different in the way LR and Elements Organizer deal with moving files and folders.
With Elements (at least not too old versions) if you get a problem like a power outage when moving files, what happens?
- The original files are not deleted, they are still there.
- The part of moved folders is on the destination master folder or drive. The catalog rolls back to the original situation. You only have to delete the partial copy and restart the process.
Seems like there is a two steps process : a copy followed by a delete only if the first transaction has succeeded.

In the Organizer or LR, it's obvious a backup is in order before such a risky move.

On the other hand, relinking in LR is much better than in the Organizer, so, in the Organizer I am often tempted to recommend moving by drag and drop from the folders panel.

I have not met the issue with moving files in LR (infrequent reports...) but I wonder what happens in this case with the original files (can they be recovered from waste bin) and the original catalog (which may have been backed up) ?

Many of us long-time users make the same recommendation: If you're moving large number of photos and folders, do it Mac Finder or Windows File Explorer.  Then relink the missing folders in LR.  There have been infrequent but persistent reports about disastrous data loss for many years.

Today I moved a folder inside LR to an external HD. The folder itself was over 40GB. The progress bar stopped about 1/3 way through the process, and after 15 minutes no more files were being moved. I finally stopped the move by clicking the "x." When I looked at the size of the folder in the external HD and the size of the original folder still remaining, I had lost over 25GB!!  
Arguably the most important function LR has is not image organization, it is image preservation. And if files just disappear due to LR glitches, then steps need to be taken to fix that as priority #1! 
I will not be moving files within LR any longer, and I will not recommend that anyone do so. If I know of someone who is considering using LR, I will suggest they look at alternatives.  Unbelievable!

Please help!

Couple of days ago I used Lightroom 5.7.1 on my Laptop with Windows 10 and tried to move a folder "2017" (containing over 9300 raw files) from computer's hard drive to the external hard drive. The Lightroom moved 19 pictures only and the rest of the files and the folder itself disappeared entirely from my hard drive and only those 19 files could be found on the external hard drive. The move process took only a minute so it looks like it did not transfer the rest of the files. Please help as it was my entire year of work and family pictures! Thank you!

You may have had all of the files in that folder selected and when you did the move. Search your hard drive(s) for one of the file names you moved. They may be there, but in a different location than where you intended to move them. Can you remember any of the file names? Is the one file that could not be moved still showing inside LR?

I am using the current version of Lightroom. Today I moved a file from my laptop hard drive to my external hard drive. LR gave me an error message stating that it could not move one of the file. An entire folder of images (260) is now gone. It is not on either hard drive. This is the second time this has happened. This issue is still not fixed! How do I let Adobe know this is still a problem? 

Correct, the update is designed for prevention - not recovery.  (And I am back...)

Inka, Rikk's traveling at the moment, but I can answer instead. The update aims to prevent it happening in future. You'll need to restore the images from your backups.

Hi Rikk, will the update be of any help if the files are already deleted. I have the same issue as most other users. I moved a folder between two external devices and all the files are gone. 9000 images of my kids. Please help!

I've checked the version before posting the message above.
Screen capture is in the second reply to the announcement (above).