Some prefixes are not calculated correctly.
For a QSO with AM70URE/6, LOTW gave me credit for AM76, but HRD showed the prefix as AM70.
Same thing happened with AM70URE/8 and AM70URE/9.
The number of LOTW digital prefixes doesn't match the HRD prefixes. (HRD's # is higher) Some of the mismatches are due to the above problems, but I haven't figured out what else might be wrong.
I generated an Award Tracking report for "CQ WPX (HRD)", double-clicked the WPX digital Confirmed number and it displayed the list of prefixes. When I selected the prefixes and attempted to copy them to the clipboard, HRD crashed and generated a dump file. I don't remember where the dump file is, but if you want it, let me know where to look for it.
I'm having similar issue of characters being added to the WPX, it's like it's taking the first 3 characters of the call as the WPX ?