BoA Product Change Questions

Thanks to some tips here (and the magic 866 number), I was able to do a product change from an old, lousy rewards card to the Customized Cash Rewards card. I got through to a rep within a minute, and they were able to do the change. It took about 5 days for the product change to show up in my online account, and I was then able to set my preferred 3% category.

I have a couple of questions that I'm hoping someone who's done the same may be able to answer. I didn't think to ask when on the phone, and I'd rather not have to call again to get them answered.

1. I'm assuming that I will be sent a new card at some point. How long did it take the new card to arrive from when you did the PC, or from when the PC showed up in your online account?

2. Does anyone know what happens if I try to use the current card I have for a purchase? It doesn't seem like my account number changed, so I'm wondering if it's safe to use. And, more importantly, whether purchases would register properly under the new rewards structure.

Thanks in advance for any info!