On Cubase 10 pro (10.20) I can’t copy rack settings from one channel to another by drag’n’drop as I was used on Cubase 9.5 Pro.
The settings are moved instead. Alt-drag is ignored and moves the settings as well.
By the way, documentation was wrong in my 9.5.30 pro pdf file regarding this, and my Cubase 10 pdf is the same.
Documentation is right in the v9 directory at Steinberg website.
Real behaviour on 9.5: copy is simple drag (like channel settings), move is alt-drag. (In the pdfs is described the other way round for rack settings)
I am on Windows 7, when I press alt on my keyboard, the “sus” tab up there shines.