Flummoxed by files not transferring then disappearing....
I want to transfer the files I have in iTunes (WAV format) from my 21.5" (Late 2012) iMac to my 27" (Late 2013) iMac. Both are supporting Catalina 10.15.7.
I dragged numerous Artist folders containing the files onto a USB stick from the 21.5 iMac. I then transferred the folders from the stick to my 27" iMac desktop. So far so good.
Unfortunately it appears that no matter how I try to import the folders into iTunes (File > Import or dragging the folder directly into the main iTunes window), iTunes will not take them. I get a blue outline around the window and also the silly little 'job done!' sound but nothing actually happens, iTunes isn't updated with the files.
Then I noticed that it's not simply that the files aren't appearing in iTunes, they're disappearing from the original folders on the desktop! Furthermore no files are appearing in the 'Bin', they're seemingly just vanishing into thin air.
Can anyone possibly assist please?
Thanks.
iMac 27″ 5K, macOS 10.13