For some reason KLM/AF are really good at communicating cancelations.
I had this happen a few weeks ago. It took the Saturday (Delta) schedule change to roll through for it to show up on the Delta PNR. Ended up rebooked with a 0 minute connection in AMS. Pick out a preferred routing and call Delta later. I'd also suggest maybe waiting until Monday - I tried doing this on a Sunday and it took the agent + supervisor 40 minutes to sort it out...