OK... in doing a check of my z7, if I tab to the "Information" ("i") setting on the back of the camera, and go to "Release Mode", on "Continuious High" (Extended) the flash "ready" button shuts off and it will not fire the strobe, but the camera still works. However, if you go to normal "High" and "Low" the "Ready" light on the flash lights again. In single, no problem. In High, it is missing frames while the flash is set to 1/64th power. This may be a change that was made with firmwear releases (which I have kept current). In the model I used, which was a beta version of the first version of the Z7 firmwear, they did not allow the flash to be fired on anything but "single", and it still seems sketchy to me on "high" mode. I have sent a WeChat to my buddy at Nikon asking for their response to this and have not heard back, but when I do, I will post their response here.