As incompetent as we all know Cumulus to be, not having the calls changed on the flip date was probably not their fault. I was working as an intern in a cluster up in Knoxville, TN a few years back when Citadel moved a couple of stations to new frequencies. They appilied for the moves of calls months in advance and they still didn't have approval by the flip date.
I remember so vividly because we couldn't use the new Legal ID packages we had ordered and a couple of us got to record ID's that were used for a couple of weeks.