Yes- and it stinks and really caused issues with our trip as we usually hop for lunch. Even if we don't have a lunch reservation- on the days we start at DLR we often hop to CA around 11 or 11:30 and eat at their CS for lunch. DH really likes some of the counter service at CA.
What was really frustrating was when reservations dropped late and after our park reservations were set and I could only get reservations at any time during our trip for a restaurant where we wanted to eat lunch (r for Oga's at all) with times before 1:00 p.m. on a day we had a reservation in the other park. If you try to switch park reservations you have to give yours up before it is confirmed that you have one in the other park. Where I should have been able to book those reservations, I had the stress having to look at them just sitting there with their availability taunting me because I couldn't enter the park for them, and of having to stalk the dining website and setting alerts at other websites to try to pick up reservations on the right park days.
LOL- you really got me started. We despise that park reservation system. It really messed with our trip.