Help with bulk deleting ~9000 duplicate QSOs in Logbook (free account, accidental upload)

Dear QRZ Team and fellow hams,

I recently helped my friend BG0EOQ set up Wavelog and accidentally uploaded his entire log (~9000+ QSOs) twice to QRZ Logbook due to a sync error. Now his Logbook shows roughly double the number of entries, with duplicates mixed in by date and callsign.

My friend is a free account user (no XML/Logbook subscription), and he's quite upset because the log looks messy and stats are inflated. We've already cleaned up everything in Wavelog locally, so no more duplicates will be uploaded.

From the FAQ and forums, I see that:

• Single QSO deletion is possible (open QSO → red Delete button).
• Multiple selection (Ctrl+click or Shift range) + Actions → Delete selected seems available, but with 9000+ duplicates, it's very time-consuming and browser often lags when selecting large batches.

Is there any way to:

1. Bulk delete all unconfirmed duplicates (or a date range) without subscription?
2. Or get assistance from staff to clean up these accidental duplicates? (We can provide details like approximate upload date/time in the image below)

We understand duplicates are user responsibility, but this was an honest mistake while helping a friend, and manually deleting thousands one-by-one is impractical. Any guidance, tool, or help would be greatly appreciated to make his log clean again.

Thank you so much for your time and support!
73 de BG0FFH Cade, helping my friend

 

Delete QRZ, then LoTW Sync brings duplicates back! Free tips to clean bulk? Can LoTW delete/ignore erroneous ghosts?

 

你面临很大的挑战，因为如果所有这些重复的QSO都上传到LoTW，它们可能已经在LoTW数据库中了。虽然LoTW可以忽略确切的重复，但我发现这不可靠，LoTW不允许您在QSO上传到数据库后删除它们。因此，即使您删除了整个QRZ日志，如果您再次尝试与LoTW同步，重复的QSO也可能被下载回QRZ。

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You have a big challenge because if all of these duplicate QSOs were uploaded to LoTW they they are likely already in the LoTW database. While LoTW can ignore exact duplicates, I've found that to be unreliable and LoTW does not allow you to delete QSOs once they've been uploaded to the database. So, even if you delete your entire QRZ logbook, the duplicate QSOs will likely be downloaded back to QRZ if you try to sync with LoTW again.