Removal of Empty() from cell

[#1]

I import lots of photos into JMP as part of my work. When complete, blank cells in columns containing photos show "EMPTY()". Prior to JMP 19, I could delete this and it would show a dot in the cell. With JMP 19 I am unable to delete the expression. Is there a way to remove it? If not, why the change?

[#2]

Insert "." instead of just deleting the value.

Edit: And if you want it to be empty image you can use something like

New Image("", "png")