Hi, SE_JonF
I find that when i copy the white (masked) part into a channel of a new image it puts it in the middle of the new image rather then were it should be as in the previous image it was taken from. The only way to stop this was to fill the the rest of the image with the black 1st then copy it. I dont see the need for making sure there is a black background in the new imge 1st, I’m i doing it wrong?