I'm sure I'm not the only one among the thousands of CQRLOG users which has faced this issue.
When the program saves the same QSO twice (happening some times with FT-8 and WSJT-X logging feature) and you try to delete one of these duplicates, then if you have enabled the upload onto CLUBLOG and, or HDRLOG, the updating/uploading process fails because the remote servers cannot proceed because they don't found anymore the QSO!
I wish you developers try to find a solution to this problem in order to be able to edit the log by deleting a duplicated QSO, without then facing the updating/uploading issue on the remote servers as CLUBLOG and, or HDRLOG.
When this happens to me, I need to export all the log QSO's in ADIF format file and manually upload it on the specific remote server, through its web interface.
Thanks for your kindest attention.