Can't copy existing patches

Hi again…

I’m using AP mode, and following this youtube vide from CG

At point 1.14 in the video where he copies an existing sampler, I am unable to do so. I am trying to click copy, but nothing happens!

What is going on?

Hi - after ticking the box next to the file/folder you would like to copy, click ‘Copy’, and then ‘Paste’.