I have for my last trip and for my upcoming trip. The last time, I was so nervous that I called disney dining to re-confirm my ressies. They were always there!
Just get your first reservations and after you have a confimation, hit continue shopping. When you have finished all of your ADRs, just click check out of shopping cart and they will all pop in for you. Then Disney will send you an email confirmation that you can print and that way you have all of your ADRs in one place---it's great!!
Make sure you put in your Disney reservation number that way if you want to check on the ressies online, you just have to log in and they all will pop up in your vacation details!