My exact conversation just moments ago with a woman at the Idaho State Tax Commission:

her: May I help you?

me: Yes, I am ready to file my Idaho taxes and I owe a little bit of money and the address on the voucher form is different from the address on the Idaho Form 40 and I wanted to make sure I am mailing to the correct address.

her: Yes, that is correct.

me: Which is correct?

her: Well, we have lots of addresses, it will get to us either way. You can mail it to (says address).

me: So the address on the voucher isn't right?

her: Yes, that one is for payments.

me: So which one should I use?

her: If you're mailing a return with it, go ahead and mail it to (says first address again)

It kind of reminded me of an Abbott and Costello routine....and my tax dollars are paying for this fine help at the Tax Commission. Niiiiiiice.