I just went from the Signature Visa to the Business Visa this month, and I was given all the benefits (nights, points, free night's stay). I'm not sure you're supposed to, but they did give it to me. Perhaps because I asked about it specifically, or maybe because it was from a personal to a business card...

I may switch over our personal credit card to the Premiere card this coming year under my husband's name so he can also get the points, nights, etc.