Thanks, that was it! I saw that lightning bolt and thought about clicking it, but opted to wait. Everything is selecting the correct options.
Now I have another semi-related question. There are currently three file upload fields on the insert form. Right now I'm just displaying as download links on the update page. I was hoping to display a file upload field if there is no existing file. Is there an easy way to do this? You can see how these fields are set up in the file I sent you.
Thanks again for your help, Ray!