I started putting together a magic sheet on our gio, then continued working on it in the offline editor. Now that I've merged it into the show on the desk, the gobo images I loaded for the relevant beam pallettes are all muddled up. The buttons still target the right pallettes, but the images are being used on the wrong buttons. What causes this, and how can I avoid/fix it? Also, is it possible to change the source image for a magic sheet image without just deleting the object and starting again?