Changing Cover Image order

Is there a simple way of changing the order of cover images? or making inserting an image so it will be 1/2 rather than 2/2?

If you want to swap picture1 with picture2, then you can cut out picture1 onto the clipboard and immediately insert the clipboard content back into the file, so the previously picture1 now will become picture2, because it will be put behind the remaining old picture2, which will become picture1 of the picture list.