If I find out anything useful, I will let you know
Mel,
Guess what?
I made the disappearing image disappear, just as you described.
I did it three times, and then I decided to make a video for Mike, and I couldn't do it on demand any more.
I had two in the queue. The second image had a crop and a cutout. I adjusted the location of the crop since that has a direct bearing on the location of the fade part of the cutout.
When I moved the existing crop up a half inch, QU sort of hung the crop and left the new location with the outline of the old location on screen.
I clicked DONE anyway, and Viola. Only one left in the queue.
I repeated it three times. The image disappeared when the refreshed image did the "cluck cluck" to signal it was done rebuilding.
Since you have neen vindicated and no longer need that jacket with the laces in the back, don't throw it away. I might be looking for a used one.
Fred