OK for what it's worth, Vanguard has confirmed that they do report these 1099Q trustee to trustee to the IRS.
They also told me to file when I have the Form 5498 which should help, but those forms are not published until after the tax return deadline. Again, from my earlier post, the IRS publication says this is not a taxable event and not to report it, but the reality of not reporting income (even when you are correct) can cause IRS notices.
