On my Github (https://github.com/jimcarson/radio) is a python script that will let you bulk correct records in two cases:

1) The other person has reported a different county, state or grid square in QRZ;
2) Your #pota ADIF lacked location data and QRZ filled in your QTH by default.

You'll need:
+ Python (pandas, openpyxl and requests),
+ A QRZ API Key,
+ A full export of your QRZ logs (because we need to fetch the QRZ logID) and
+ Sn Excel file (sample supplied) or CSV with the changes