This happened to us the last few years. For some reason, it never showed up online. However, since you made a change to your ressie by adding the DP, your next ressie confirmation you get via snail mail will have the DP listed.
We have made a few changes and have asked everytime for email confirmations of the changes... we have them in a folder and will be taking them with us... JUST IN CASE!!!!
I would call Disney and verify the DDP is on your ressie
Thank you for the answers. I just called to Disney because I did not get an conformation email as well.
The assured me everything was oke but Im the nerves type who likes to have everything in writing.