I would contact elementor.
If you really want to do this it would require creating an acf/save_post action to either get the values from the attachment and add them to the post or to use values in the post to update the image.
If I really needed to do this I would pull the values from the image and save them to a standard WP custom field without supplying a field to edit them.
Or I would create fields and use these while ignoring the values in the image. This would be the case if I wanted to allow the user to have different values for each image on every post. In this case I would make them required and most likely use an acf/load_value or acf/prepare_field filter to preset these fields to what is held in the WP fields for the image.
