I have attached several images to a post. When viewing the images in the theme, each image is linked to a larger version of itself. I would like to change this link to direct to a specific URL. However, when I change the URL under "Link URL" under attachment options, the link does not stick after clicking "Save All Changes". It always reverts to the link to the image itself.
Is there another way to create custom links on attached images?
Note: I'm not trying to alter the link TO the image, I'm trying to create a custom link href when the image is clicked.