Replacing an image without deleting it

Is there a way of replacing an image that is attached to a record without deleting its place. Since the order of images for each record determines the php call I need to maintain that order so when I replace an image I would like it to be in the same "place holder." Make sense?

It makes sense, but unfortunately there is no way to do this.

Thanks. I thought so. Might be good for one of your updates.

PS Might you be able to answer this question: