I have recently had the opposite problem. I deleted the roaming folder, thinking that is what was causing specific problems for me, and I ended up deleting the cubase presets permanently. I know this is an old thread, but I know people who have problems like mine are still reading these out of frustration when searching for an answer. If you want to delete track settings or plug in settings they must be deleted out of the roaming folder for steinberg. But I would strongly advise saving these files on an external because they are a pain to get back. I had to install cubase on a different computer and copy them over.