Sigh. I'm too dense for this, I guess. If I insert the filename as value, it still doesn't on the update page.
<div class="lineGroup"> <label for="edfile" class="sublabel" > Document File:</label>
<input name="edfile" type="file" id="edfile" tabindex="4" value="<?php echo($WADAjobs_docs_update->getColumnVal("edfile")); ?>" size="30" title="Please enter a value.">
</div>
Sorry for being such a bother.