It would be an improvement if I could copy tests between folders. (I know I can move them, but if you want to create many similar tests, it would be much faster to copy and then modify them)
As a workaround, i tried to append the current .hml file to itself and then moved the imported tests to my empty folders

this worked exactly once, but after deleting the appended folder and trying to append again, i got error "range check error"
will it be possible to copy tests in final version?