We did a lot of back-and-forth on this board (or its predecessor) I'm guessing five or six years ago on the legal ID subject--things like "KSLX Scottsdale(/Phoenix)" is not a legal ID as the calls are legally "KSLX-FM Scottsdale(/Phoenix)" (look it up on the FCC FM Query site). Or how to do a simulcast legal ID (not "KMVP AM & FM Phoenix", but rather "KMVP Phoenix, KMVP-FM Phoenix" (or in reverse order, but giving the ID for each station separately).
The FCC probably doesn't care anymore and wouldn't squawk...they're too busy trying to run a gutted operation (think: field offices closures and "how many commissioners do we have left today?").