I updated my address, county and grid square info on qrz when I started operating at my new qth in February. I noticed when I go to my qrz logbook and double click on a qso as if to edit, the city, grid square and county still show the old info. Qso's that have been made weeks after the info was updated still show the old info in my qrz logbook.
From the Logbook Help files. I've moved to a new QTH. Why do my outgoing logs still show my old address? You are given the opportunity to state your QTH each time you log a contact. Most people, however, let the system fill in the details of their own QTH by inserting the Logbook Properties. Logbook Properties are the settings for your current setup that you wish to have defaulted into new QSOs that you make. Changing the logbook properties affects only future records that you input. It never changes any existing QSOs.