Hi. I've just purchased this WK7600 recently. Awesome. I have been doing midi recording years... ago on my Amigas, with a few synthesizers midied together. So, Im used to step editing a lot on certain software at that time. Now I've stumbled upon this WK7600 that has the capability to do sequencing recording, I've discovered that there is no UNDO function on it.... or perhaps I might have miss it somewhere... Any ideas... Thanks.