Copies of documents disappear when original is deleted
I'm attempting to tidy my wife's Mac, all her documents are cluttering the desktop, when I create a new folder and copy and paste items to it all is well, however, when the original is then deleted, the copy in the folder disappears as well!, any suggestions, it doesn't happen on my Mac, am I missing something on the settings?
MacBook Pro (2017 – 2020)