When I get a file of deceased donors from a mail house, I need to be able to globally mark them as deceased.  I see that I can import them to a constituent update batch, but that only the "is deceased" and the "deceased date" fields are available. It doesn't look like I can import a confirmation value or a source value. Please add these fields to the constituent update batch.

This is a common theme with imports - you can import only some of the fields you need within a particular category, not all of them.