I called APGR and was told these emails are a relic from B4 etickets and IT has not bothered to correct the issue. He also put me on hold and verified what RPA said about no longer cancelling subsequent legs of a reservation if a leg does not get scanned. He said they would send an email saying there is an issue with a reservation. My call was answered in less than 30 seconds. No idea why people stay on hold. I called a few days ago, was told it was a 30 minute wait, elected to have them call me back when it was my time. I got a call back in less than 30 minutes.