If the station is transmitting outside of the assigned frequencies for the class (prior to update), then the licensee should sign callsign/AG or callsign/AE.
However, if they are transmitting within those frequencies, then only the callsign is required.
It is the operators responsibilty not WSJT-X or any other software for proper identification. In WSJT-X this is done via: Settings/General tab/Station Details/ My Call field.
