I looked into that, the QSO is marked Y in the sent column although it's not a LOTW user so it's not confirmed. I deleted all the QSO's from that callsign and tried again. Again I got the same "line 38" has already been uploaded but it's a different callsign. When checking that callsign, I'm finding them marked as sent YES but again not confirmed by LOTW.
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If it makes any difference they all seem to be QSO party contacts where I have multiple contacts on the same day with the same callsign. However, they are not true duplicates as the time and county information has changeed.
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Alan W4ANT
