Damnation was the second animated Resident Evil movie, too.
A few characters are becoming exempt from that rule, though. If you do not count spin offs, Chris got to be in Resident Evil 5, Revelations, and Resident Evil 6 in a row. It'd be nice if Ada got that kind of treatment too, the only significant role she was given before Damnation was Seperate Ways (2005) and the short Death's Door scenario from Umbrella's Chronicles (2007).
Was Ada in RE1? No. Was Ada in RE2? Yes. RE3? No. RE4? Yes. RE5? No. RE6? Yes.
It's pretty clear that Ada most often appears in even numbered titles, 7 is an odd number so it's pretty likely that she won't appear in it.
Look at it this way: Have Leon and Chris ever been on screen together before RE6? No. And before RE6 came out, I predicted that even though they both have their own campaigns, they still wouldn't be on screen together, but as it turns out, patterns change.
"I've never in my life wanted to punch a girl like I want to right now" Light Yagami 3DS FC 3995-6522-2067