I am very interested in adding DD and then difficulty levels to DLCs that currently do not have them. I added DD to a song that did not have it, but, of course, it shows with DD, but only one difficulty level. I tried to follow the steps in the help file associated with the DDC in the Toolkit, but it was not clear to me on how to actually add the difficulty levels to a file that now has DD. Is there something pinned somewhere that goes into more detail on how to do this? Sorry, but I searched and couldn't find what I was looking for.