Never mind. Found the answer in the Facebook group. Needed to look in the User’s Fixture Library.
I want to edit a GOBO image on a moving head (Shelds LED Spot 80W). I used the Editor, uploaded a image, went through all the NEXT menus, Confirmed Save the Fixture, Confirmed Save the library.
I restarted ONYX, patched a new fixture and the new image wasn’t shown.
What am I doing wrong ?