Spoke with HR today. They have received quite a few calls regarding the letter. We are still in the pool, it is just the annual purge. They are no longer accepting updates via fax (like updated resumes) and when things resume, we will have to update electronically, they are going paperless. I did not ask whether we would have to re-interview, I'm just pretty much preparing myself that it is likely that's what we will have to do.