No, none were copy/pasted or dragged and dropped. Now… to create the ‘new’ document, I copied the entire brochure (with all the embedded images) into a new document, and then on the links panel, changed all the ‘embedded’ images to a link by re-linking the image. It seemed to work, but would it still be reading the original embedding somehow?
It shouldn't be reading the the images as embedded if you unembedded them, but there may be other crud that can be removed by the .idml process.
Wow! Problem solved Peter! I tried your suggestion of exporting to .idml and it dropped the document from 319 mb to a 389 kb. Cleaning it up, it did indeed!
Thanks again Peter.