Reply To: Can’t copy key on the cursor in 2.82

I selected the bone and pressed control C and it shows an error.

And when I select the bone and the all the keyframes like you did it just copied all keyframes.

what I did was execute the “sample  keyframes” command in the key menu and just move the generated breakdown keys and deleted the rest, but this took extra time. I wonder how you did yours with just using the copy and paste command.