+ AA6YQ comments below
If the data is user-supplied and the QRZ webpage shows the correct data such as the case with R2FC and PJ4JA I don¡¯t understand where else they are getting the user-supplied data?
+ What the QRZ web page shows today is irrelevant.
+ What's relevant is what the QRZ web page showed on the day that the QSO was logged.
73,
Dave, AA6YQ