I just did the following test in 8.01: created a file, imported images, closed file; deleted images, reopened file --- in the Utilities > Usage window, status is now "missing", but the file path is still displayed, as it should be.
Is that bug limited to one of your files, or do you encounter it with every of your documents?
EDIT: answered this without noticing this thread is about Apple Script.
Manuel S.
Technical Support Representative