[Plugin: Media Credit] Clear default credit for old images

I wanted to ask if you knew how we could zero out all of the past images’ credit fields. Right now they default to whoever uploaded the image (or so it seems) but I’d really like it to be empty/blank until I manually go in and select the author.

This is necessary because I’m using the plugin to display all images for each author. So when you go to the author page I am calling display_author_media($curauth->ID) to list the images which the user is credited for. Currently, though, this shows nearly all the old images under the admins’ pages. I would like those credits to be blank, so I can manually assign old images if I’d like, but not have to have them all show up all the pages of those who originally add them (who are generally not the actual authors of the photos).

I hope that makes sense. Thank you for your time and help!

http://wordpress.org/extend/plugins/media-credit/