Import images confusion

[Bob Sneidar]

Hi all. 

I import a PNG as control all is well. I assign the icon of another button to that imported image. Hey there it is! I delete the imported control, HEY the icon disappeared! 

Is it true then that the image is attached to the imported control and deleting the control deletes the image? So I have to keep a card with all my imported images? Seems there must be  better way. 

Bob